I really think it’s a case of valve being explicit (no, your uncle can’t will you his steam collection), and gog having the same policy but looking for the closest way to say “yes” to avoid falling into the same PR trouble.
“No, access is lost when you die” is a valve support person giving a direct response to an individuals question.
“Yes, if we are given no legal choice” is a gog PR person answering a reporter to sound as good as possible.
It’s one of the better known downsides of digital media, so this whole thing feels a little… Much ado about nothing new.