Exactly. If they wanted a different game, they shouldn't have use the title Baldur's Gate 3. If it's going to play differently ala 4 party characters, turn-based and main focus was primarily co-op/multiplayer/DM/online they could really call it something else. Baldur's Gate Online, Baldur's Gate Turn-Based tactics, etc. Not to mention there's no continuation to the story of earlier baldur's gate. So using the title 3 here was primarily gathering attention and to gain press coverage. It seems really a disgrace and cheap advertisement. Possibly under instruction from WoTC though.
I used to defend their calling the game "BG3", and was fairly aggressive when someone said they had a problem with the game being called BG3. My stance basically is that I would have no problem with the game being called BG3 as long as it is a [i]Baldur's Gate game in terms of spirit, mechanics, feels, quality, and so on, even though the story will be something else entirely.[/i]
So if the game turns out to be not quite a Baldur's Gate game, I will probably feel a bit embarrassed. The game may be as good as D:OS2, but if it is a D:OS3 rather than a BG3, then calling it BG3 is not cool.