I've never seen it put this way but I think you've hit the nail on the head.

Text requires correctness to some extent; bullshitters will just yap away for hours and nobody can point to one piece of text and say "Here, this is where you are objectively wrong, and/or misrepresenting things".

The unfortunate reality of remote work is there's a lot of zoom meetings where yappers in high places will BS away -- a lot more "important" zoom meetings than "important chats", especially in public.