Yeah a lot of retro games on GOG were fixed up with patches and stuff like that (often by GOG themselves) and sometimes regardless of any fixes applied, there are version disparities between the two platforms where usually the Steam versions is a slightly older release of an old no longer updated game compared to the GOG version though I’ve seen it happen the other way around, too.
I’m pretty sure he’d agree with you considering he said he would choose breathing over walking.