Can you translate to me what the hell is this mess of a spreadsheet is even about?
I really hate spreadsheets, lol.
At glance it looks like a list of games that didn't get some updates that Steam did but then most of that stuff, or the games involved, are so surface level and unimpactful that I don't even think it would be worth giving up complete ownership over a DRM-free copy by buying those games on Steam over GoG. It's PC, you can always find a workaround for every problem and that's the beauty of it.
Plus you could make the same kind of spreadsheet for Steam releases, and it probably would be way longer than this one. Just last night, I bought Soul Reaver 2 on GoG and it worked flawlessly, while the Steam version that I attempted to get running a few months ago was so busted and refused to cooperate so much that it drove me to abandoning the game completely until I wanted to play it again yesterday.