While I can understand being apprehensive about upcoming changes that you're not used to... the extreme facial expressions should be relegated to a mod. Especially since they evoke such negative feelings for many players. It shouldn't suddenly be the default after all these months of the game being out before Patch 6. The default should be neutral, or expressing pleasure/happiness (as kisses usually do/should).
I am very sure that a mod with those extreme negative expressions will be made available so that you and those who like them can have them again.
"In Patch 7, we’ve made improvements to the facial animations of your character during some kissing cinematics, including with the ascended Astarion."
Key word *including*. This is not a patch for AA fans. Other expressions are changing too. Including other entire cinematics. Larian seems to be fixing what they deem needs to be fixed.
Yes, that's important to note. It's not solely AA that will get these types of changes. So personally, I also don't think he should be the only one that is given two options for kiss facial expressions (as others have said, would create a double standard).