It isn't needed to make a D&D game but it is the most widely recognised one out there, and considering they are not an existing D&D game studio, it makes plenty of sense.
And, what do you mean "without any traits of Baldur's Gate"!?
It's a character and storytelling-focused D&D game set in the city of Baldur's Gate.
Those three traits are if anything MORE significant to the series than the subgenre they spawned.
Nonsense. All that you're doing is throwing arbitrary opinions out to try to defend an argument that is overtly baseless. Every game is a sum of all its parts, and a series creates an identity for itself based on the games it releases. The Baldur's Gate series has had only 2 games in it and they both share the same characteristics. Therefore, to use the Baldur's Gate series name is to appeal to fans of those two games. The RTwP combat system, which Baldur's Gate is the father of, is as much a defining trait of the series, even more than which D&D ruleset the game uses.
Like, dude, there's more to a game than the specific exact way you fight people in it. Or, there should be, in order to make an actual good game. And if there's a SINGLE genre which should remember that the most, it's RPGs.
I never suggested otherwise. But since you suggest you think that comment means it doesn't matter which combat system a game has, full-stop, therefore you would be 100% OK if Larian make BG3 use RTwP, an only RTwP.
The Baldur's Gate name is recognized as representing a specific game series with specific characteristics. The only reason its name would be used is to draw in the people who like that series and its characteristics. Its core characteristics include RTwP combat.
And new addition, the so-called " the weak 'this game was more popular therefore its combat system is preferred' argument," is weak BECAUSE IT'S A STRAWMAN, nobody is actually saying that, you're just using it to deflect away from our actual arguments.
Like so much of what you've claimed, this is also false. Multiple people have made that argument on the forums before, and elsewhere. Hence why brought it up and discredited it.