I absolutely love some companion interactions... but others feel like mary sue fanfic that's meant to highlight a certain companion to the detriment of the character you've chosen to play; sometimes, Tav comes across as a DID patient à la Split's Connor/Patricia/Hedwig. If I'm not playing X companion, they don't need a witty comeback to everything I say. Always having the last word doesn't make someone cool, it makes them annoying. If I'm not playing Shadowheart, she doesn't need priority interjections everywhere. I'd rather have Speak with Animals active every day and talk to Boo.
Most RPGs suffer from this problem to some extent but that doesn't mean I wouldn't like BG3 to come up with solutions or workarounds. I wrote a whole post about it on steam back at patch 1 and there were plenty of good ideas being thrown around. For example, I remember some people discussing the option of personality types; choosing a personality type at character creation. Going with that idea, a pacifist wouldn't say "Death's too good for it!" but he might tell Lae'zel "They're survivors, not soldiers". Or, it could be linked to the chosen voice (since we know there are 8 recorded voices of which only 4 are available now). A brutal commander/hardened warrior & a shrinking violet/pampered noble would react differently to the same event.
