Never really saw it as a fit for the hn audience as the quality of the code and site aren't very good and as other people have mentioned it's a very niche space to be working in.
If you are interested in this kind of thing, I think there are some cool projects out there aimed at reducing the cost of development [0] and scanning [1] analog film.
I just had a little look at the second link you posted too, I'm kind of curious if you could hack an old 35mm film scanner to scan 35mm or smaller cinema film.
I've got the Canon CanoScan FS4000, you normally have to load the film into a plastic caddy, and push it in, but I was thinking if you cut a hole in the casing, if you could maybe feed the film through (I've not looked at the internals though, as maybe there's something in the way that prevents that).
I should add gifs of the assembly with links to zips containing all the parts.
Hacking 35mm or flatbed scanners to scan movie film cheaply and at high quality is something that would fill a real need for several labs and experimental filmmakers who would tolerate a longer scanning process for "free" scans.
What I also found interesting is this site:
https://www.indiewire.com/gallery/movies-shot-on-16mm-moonri...
Everybody knows the famous story of how El Mariachi was made, but I was surprised by some of the other films in the list (eg. Black Swan).
I think cost is certainly a barrier but I'm self-interested enough to let people think it's bigger issue than it is because paradoxically that attitude has led a lot people to give away equipment and filmstock for virtually free (to me).
If you're looking at the used cine camera market, the cost of Bolex cameras has climbed recently and I think that's due at least in part to Kodak re-issuing Ektachrome.
For modern film projects need openhardware digital tools such as AXIOM cams by apertus°.