I think people like consistency.
BG3 Act 1 alone is a collection of the most dangerous places and monsters of the world.
People can fill books and whole games into some of the locations BG3 consumes every minute.
It makes the world feel tiny, and shallow.
I concur but I get the feeling it is something of a minority that feels this way. A cursory glance through some other forums dedicated to this game are awash with gushing reviews of the romances, story and characters.
To get back to the feel of the game, I feel it could use a dose of the mantra "less is more" but my understanding is that it is really not Larian's style to do so; everything is cranked up to the max in the name of 'fun', whether it be companion backstories, the humour, the combat, etc.
The world seeming tiny is not really helped by the theme park feel to the map, there are no truly open expanses to explore and fundamentally it is a series of pathways leading you from one encounter to the next. Inevitably this diminishes somewhat the sensation of undertaking an epic journey because everything feels so cramped and close.