Dark Alliance is called dark alliance because its a different genre. its not a CRPG, its not the same kind of storytelling
its an Action RPG where you play a single character, its a spinoff. This isnt.
Dark Alliance has its own series name because it is a separate series - just like Larian's upcoming game is a separate series from Baldur's Gate. There is not a single shared style between Baldur's Gate and Larian's upcoming game. And Larian's upcoming game is officially the sequel to Descent Into Avernus, which means it is literally a different series than Baldur's Gate.
You may not like to face the fact that your favourite developer is selling-out and doing a cash-grab, but that's exactly what Larian are doing by calling this non Baldur's Gate series game "Baldur's Gate 3". It's being called that exclusively to hype up the fanbase of the Baldur's Gate series and to exploit those fans for sales, while not delivering anything that is known to be Baldur's Gate.
D:OS2 fans are happy because Larian is mostly cut-and-pasting D:OS2 with minor changes into the Forgotten Realms setting, effectively creating D&D D:OS2. But people who actually care about the Baldur's Gate series and want to play a new game from that series are betrayed by Larian's cash-grab sell-out move.
