Because an RPG like BG3 is not meant to be played solo. Neverwinter, yes. Skyrim, yes. The Baldur's Gate series is built on being a party based series of games, and that is how D&D is meant to be played as well, as a party. If you want a solo game, there are plenty out there. What you seem to be trying to do is force a game to be both solo and party based and somehow balanced for both when it is the 3rd game in a series that has been based on a 6 person party from the very beginning.
Well, it's developer who decides how their game is meant to be played and Larian confirmed that they will add a Lone Wolf mode.
"Is there a Lone Wolf mode planned? This is actually a question already being asked by a number of our playtesters who are currently playing the game. A Lone Wolf mode is planned, but wonâ€™t be in the game at the beginning of Early Access. One of the many great discussions that come from people playing, and talking with us."
If they are planning a Lone Wolf mode then why are we even debating this? You're confusing. Let them create a Lone Wolf mode for you, and a 6 party game for everyone else. Why are you fighting for a 4 party game instead of 6?
Right on. Exactly what was going through my mind as I was reading this exchange. BG3 is, by definition, a party-based game. So talking about 4 v. 6 is fundamentally different from those who want to play a party-based game without a party. Talking about wanting to solo a party-based game is in the same cetagory as wanting to play an isometric game first-person, or a character development game without engaging in any character development. You're looking to play the game in a way that goes against the very essence of the game, wheras the discussion about party size 4 v. 6 is well within the scope of what the game is about.