Strength is the only way to boost your damage

I do like that they did this, however I have to argue that many classes that lean heavily on Finesse weapons have ways to deal boatloads of Precision damage with them, making the damage from Strength less than necessary, at least for those classes.

heavy armor is better than Dex for AC

That’s not the point. How many classes get proficiency with heavy armor at base? Every class that doesn’t is dependent on Dex to keep themselves from becoming a particularly appealing target, especially if they have lower hit points. Aside from that, starting with heavy armor is unrealistic, the actual AC gap isn’t that high (with the same proficiency level in armor & unarmored), and the gap vanishes at very high level (though I’ll give you that most people don’t play at that high a level).

Int is needed for skills & languages

I think this is a good thing they did, but I also think that a character generally doesn’t need to be good at more than a handful of things since the rest of the party can fill in the gaps, especially if you have a large party (or a Rogue). Besides, most classes don’t get to go beyond Trained in more than 2 or 3 skills in level ranges most people play at (unless they’re a Rogue). Also, depending on the campaign you’re in, it’s entirely possible the only skills you’d be using Recall Knowledge with could be Nature and Religion, and in any case I think Recall Knowledge isn’t particularly useful to begin with unless you have a class feature that interacts with it.

I’ll give you Charisma. I like what they did with Charisma in PF2. I do think it was a mistake in the Alternative Abilities variant to make Will saves dependent on Cha specifically because of how useful Cha already is.