That's unfortunate about his slides, but 40 years later is still more proven than digital at this point. To this very day all films and TV shows, even those recorded digitally, are archived on 35mm film, because it's proven when stored in a proper way. And even when stored improperly, the fact that something physical is still around, you can't beat it if you ask me. Kodachrome slides have shown little if any color fading 100 years after they were first developed, while black and white film just goes on and on, constantly giving us glimpses into our world's history. Only a couple years ago we just got a hold of someone's super 8 film of the Kennedy assassination, and when properly transfered over, must have been shot with Kodachrome itself, looks great. The 70's was a bad decade for "new" film, Ektachrome was becoming popular and had not been refined, many of those slides have indeed shown great fade over the years, but was incredibly popular due to the fact that you could develop it at home... and even that process, that accounts for some of the fade as well if you've don't got it down.
The above image is of my dad in the 70's, taken with Ektachrome... And this is acknowledging benefits to digital... The actual slide is 100% white to the eye, it's completely whited out, overexposed flash. You can't make anything out of it... Due to how it was shot in the first place, not the film itself. But using digital techniques, this is what I was able to get out of it... That image is taken digitally? Deleted, 100% chance. I use digital on occasion because it is useful, for anyone to use one bad experience to utterly dismiss a form of artistic expression that not only to this day has technical reasons for being used (because it can easily still be looked at as better), it has artistic reasons for being used even if it was not in terms of quality because of its quirks, super 8 is still being used because of this, but indeed is the only proven archival method for moving pictures... It makes me sigh, because it's not amateur photographers that will be the death of film, a medium that deserves to live much longer than floppies, for example, which are still going and have reasons to be used, but those are mostly for nostalgia, but we still use them and buy them... It's going to be everyday people with their 1000's of pics on phones that have every reason to pick up some film now and then and support their local photoshop, because its not that expensive and its physical... Shit happens, fires might light up and destroy it all... All my crap is in a few boxes just in case of that, so maybe I'll be thinking "hey, grab that box before you burn to death!" and I'll still have it... But it's also in digital form, quite a bit of it, because digital has its uses, and I'm of the minority in having practically all my documents/music/photos since 1997 on various hard drives. My stuff is going to go on just fine...
But the thing about analog is the better digital gets, the better the analog stuff looks. Transfer them all over now, in 5 years it's going to be 10k and your 1080p super8 transfer is going to look terrible at that point... That's when you go back to the original film, once again, which has transfered to VHS, to CD, to MP4 and so on, and at that point 10k or whatever it is, and it just looks better and better every single time you do it. That slide held all that information underneath the overexposure, and in 10 years if I want to show it off again, I will first go back to the slide that is overexposed and try it again, digital is the fall back, everytime.
I'm all things retro, film photography has been an unfortunate thing that has become retro when it deserves to still be a thing, but I do feel it's important for us groups of people into these old things, whatever old thing it may be, in this case here old Amiga computers, to not be unaware of the great joy in other old things. If your dad was an accomplished amateur photography, he might still have those cameras... I say get them out, try them yourself, have your son try them out as well, you never know when you might have the opportunity to expose someone else, and even yourself, to some great love... And maybe even your father... Who might not understand your Amiga love... Watch him light up and the things he's going to love discussing when you start talking about using his camera and sharing techniques. I had a girlfriend who's dad has the EXACT same camera I use most of the time, a Nikon FM... he's gone on to digital at this point, but he saw me and my camera, and that was a great moment, we can discuss all kinds of things even though he's not using his film anymore.
There's no "good luck with that" or "take care there" when it comes to film and me... I know what I'm talking about in this subject, it will last with me because I'll make sure of it, just like digital can last for some and indeed me, because I make sure of it. I have said it before, and I'll say it any chance I get, to anyone who fancies themselves an amateur digital photographer, they need to respect film enough to give it a go once and awhile, much like going back to the A2000/A1000, you might just never go back to the 1200. But there's no way anybody would regret it. It's fun.