The game was never "delayed" because it never had an official release date to begin with.
And no, I don't think it's "too broken even for an EA". I have no idea to what alleged standard that comparison would be based on, to begin with.
If anything I remember spending my first hours with the game surprised by how far ahead it was already compared to when DOS 2 entered EA (most of the voice over is already in place, for a start).

I also find any claim that "before addressing core mechanical issues there are bugs to fix" extremely questionable. I'd argue that getting the foundations right should be a priority over any degree of polishing, especially if you don't fancy the idea of having to redo a lot of work twice as you introduce new systems.

Party control in Baldur's Gate 3 is a complete mess that begs to be addressed. SAY NO TO THE TOILET CHAIN