Good to see GOG refocusing on games preservation. 100 games might be just a tiny fraction of all the games that need to be preserved, but at least someone is starting somewhere.
Steam has been so easy since proton, i honestly never learned to use lutris. I think i played with it once and gave up, but this was 6 years ago at this point. Maybe its easier to use now
I've had fewer problems with GoG + Lutris in Linux than I've had with Steam in Linux, to the point that I had to pirate one of my Steam games in order to be able to run it in Linux (the pirate version runs just fine).
Mind you, I get the impression that older AAA games are the most problematic ones, thought that's maybe because I don't run anything with Kernel Anti-Cheat and nowadays don't really do online gaming (in fact all my games in Lutris are run inside a firejail sandbox with network access disabled).
The effort and money and energy needed to keep digital things archived forever seems pretty massive... What if we just took the source code for them and wrote them down on something less likely to degrade over time? 🤔
Stop taking physical data and making it digital; take digital data and make it physical again!