Tuco, I rue the day you and are opposite sides of an issue. Luckily, in this instance we are both on the side of objective truth.
I find the "less is good enough" position baffling. Why would you use EA time to say "good enough"? I mean really, it take me back. You can't argue that 4 feels like BG. You can't argue that 4 is ideal for D&D and the can't argue that give you more content. The closest thing to argument is repeating what the devs had said "combat last too long" but I don't think that's much of an argument. Or isn't one at all. With 6 parties you can use different strategies, combine the strengths of different classes and *even if that all seems wrong* you can still just take 4 along. But it wrong as anyone who tried the mod knows.
My honest to goodness best guess is that "4 is fine" sentiment springs from a desire to side with devs and show that you know how video games work. I really can't think of another reason.
Ok here's my reason - I get bored of managing 6 characters it just gets tedious after a while - 4 to me is more engaging, I really enjoy watching my characters develop & feel more drawn into the experience. To me the 6 party camp is also the - I like to switch out characters all the time ...probably because you're not as invested in them cause there's too many & it gets boring.....
I tried to enjoy POE 2 I really did - only turn based mode, but in the end it just couldnt hold my interest - BG3 on the other hand I find seriously engaging & I put some of that down to a 4 man party (& the fact its D&D).........for me it just works - I dont side with Larian at all - I just prefer a 4 man party.