There is only one character who can speak anyway ...
Incorrect(?) Companions interject in conversations so it make sense to keep them with you as often as possible. They also can support you in roll checks, so again - unintuitive to expect players to keep them away. Control system is clunky and unresponsive so Larian really shouldn't expect players to not unchain character too often.
(disclaimer: I don't know if companions interjections and ability to support PC in skill rolls is dependent on distance or being chained to them. If it is, then my argument stands. If it is not - that it's just silly.)
Originally Posted by GM4Him
In which case, positioning doesn't matter because you can be shoved into lava anywhere, practically.
Yes, that was the most outrageous shove-centric experience I had in the game: an overwhelming number of enemies doing shove almost every turn, and if you fail the check just once you're dead. Perhaps, having to pray every turn for enemies to not shove my party to death have overidden any other issues this encounter might have had. Can't say. Did it once, and am not going within proximity of this fight until shove stops being Finger of Death that NPCs can cast as bonus action on every turn.