Kardwill: The review sections are stock full with rants about bugs that have been squashed years ago. Or the opposite, glowing reviews about the way this game works on older OS, when it's a mess on windows10...
Exactly. For me that's a way more important issue than nostalgic reviews mentioned above!
Reviews from uncritical fans ramp up games' ratings and at least make me interested in that games; technical issues are less important, because for a good game it's sometimes only a matter of determination to make it work properly.
But there are great games, with cult or classic status, which has poor ranking on GOG due to some technical issues, which:
a) does not matter, if the game is great (VtM: Bloodlines!)
b) has been already solved, but still affects game's rating.
Vainamoinen: What use is e.g. a "Doesn't work on Windows 10" review if GOG fixes it the very next day?
I play on Linux and face the problem with ratings very often. Windows 10 raised a lot of technical issues and caused a lot of games to be unplayable for Windows users. For me nothing changed, games work properly with native ports or Wine-based tools. These are still the same, great games, but the current rating system does not show that any more... :/