The examples chosen to hightlight the program on gog's own page for this initiative also do not fill with confidence. If you read between the lines it turns out that for instance it took them five years (!) to fix a crashing HoMM3 intro in a language they added, and likewise they only checked if Diablo/Hellfire even works on win 10/11 yesterday, years after they started selling it.
More power to them, if they keep at it, but I don't see anything to get excited over yet.