Yes, if a new driver releases and boosts performance in older games it is viewed as poor previous support imo
New games, no because those games weren't out before so it wouldn't be possible to make performance profiles for them. Gaining extra performance in old games leaves you wondering why it couldn't have performed like that back when you played it... It's annoying when you complete a game which had bugs or low performance, then afterwards a driver fix comes out. If AMD can perform 20% better in those games now they could have back in the day but everybody missed out thanks to poor drivers.
I know the fine wine stuff is all a bit of fun, but if I owned the card in question it would bug me