They're not a part of the Baldur's Gate main series video games at all. And they don't take place arround the city. Just like BG2 (for your information).
An authority to "define" something that exist ? That's fun. Maybe it's just a concept in your head but it's 2 existing video games
Obviously, Wotc can make what they want with their IP but BG3, the next episode after BG1 and BG2 does not look inspired by the legendary previous episodes of the series.
Is that a problem ? The answer depends the player but they are definitely things they could have done, including a party size of 6 and tons of companions rather than their usual party size of 4 with a very limited number of wierd origin characters.
In this thread you just want "to win" a discussion, as usual