Lets be honest, people want to use their main character for conversations, not delegate the responsibility to a face character. It is notable that charisma classes see much better representation in player choices than anything else. All of the 4 charisma based classes are in the top 5 classes chosen by players, with rogue fractionally beating bard and paladins, sorcerers and warlocks all somewhat more popular than rogue.
If Larian had put more effort into making stats and skills governed by stats other than Charisma interesting alternatives for dialogue options, this might have been mitigated. But by making players feel very underbudgeted stat wise in an RP heavy game, you demonstrably and heavily skew class selection in favour of high charisma classes. I am honestly a little surprised that rogue is relatively popular, but its likely not incidental that it is the most capable non charisma based class for being a face character.
Aside from the mindless fruit machine pleasure of rolling for a character (and unlike the frustration I usually have with rng in games, this is a once and done experience, not a constant frustration throughout the game), allowing us to get over budgeted stat wise would make it vaguely plausible to have a high charisma monk, for example. Given how strong tavern brawler is, monks will basically always want to leave charisma at 8. You want strength, dexterity, wisdom and con, and you can nowhere near max all of these even leaving intelligence and charisma at 8 (I suspect players dont particularly like the idea of playing a dumbass either), so there is no way you are pumping either stat if playing as a monk, which means you really have to accept sucking at dialogue.
Its not a great feeling, and its clearly hampering the popularity of a lot of classes.
Warlock is a garbage class, and it's charisma. The reason people play charisma classes is
A) The two top OP classes are, guess what, sorc and paladin. It's not even close.
B) 2/3 of the top classes are charisma, with Fighter following. It's no miracle that when there are only 3 charisma classes, you assume that it must be due to charisma and not the class strength.
C) The two most plentiful item categories are by a landslide (90%+ of magic items) paladin/fighter favored plate gear and martial weapons, with caster robes behind it. It just so happens that the paladin/sorc/fighter/monk categories absorb 95%+ of magic items in the game. There is a whopping total of two magic items in the game for bard. 3 for druid. 2 for warlock, one of them requires wyll in the party, a single legendary bow for rangers, zero gear for beastmaster rangers (which explains why ranger is largely played gloomstalker/rogue multiclass builds).
When gear is such a large part of player power in this game, the classes with most dedicated gear thrive. Rogue is somewhat better off than druid/ranger, but slightly worse than caster. You get a legendary rapier in act 3 and Orin's weapons, and that's it. Bards don't get any legendary weapons, druids don't get any legendary weapons.
