Right now it still feels like a fun forgettable ride. Of course a lot can change with a patch or two.
As I look at the mega-threads most complaints seem like logical ideas that casual gamers would enjoy too. Improved party controls & UI with asking for less superfluous advantage/disadvantage from verticality/backstab.
Would casual gamers have a preference between RTwP or Turn-based? No. Would casual gamers have a preference between a party of four versus six? No.
Even if a situation has a vocal minority, it should still be considered if their opinions are valid. Most consumers don't give feedback to the point where 3% responding to a survey is considered a win.
As as others have said casual gamers usually care about the glitz and the glam, which Baldur's Gate 3 has already done well with. So far Baldur's Gate 3 has mass-appeal with little to entice long-term fans of RPGs. I don't think it's too much to ask Larian to change a few things to keep long-term RPG fans happy.
Generally speaking, I'm also not sure why there's this ongoing assumption/narrative that history is decided by the silent majority. That has never been the case. History has always been driven by organized minorities who put their effort in leading around inert masses where they wanted them. The silent majorities are often silent because they don't have very much to say to begin with. That, and/or they just don't care. Which doesn't change much in practical terms.
Party control in Baldur's Gate 3 is a complete mess that begs to be addressed. SAY NO TO THE TOILET CHAIN