I think it's largely that as this became more of a business, the "yappers" who want to talk things out got more leverage as PMs, etc. It sounds like a caricature, but they honestly seem to get super antsy only typing and sitting in one spot.
It is exactly that and it’s clear the author is one of these “yappers”. I like that term. These people are also absolutely obnoxious irl and completely fail to read the room. I once had a PM like this who went into a near mental health crisis that the team of engineers were not “engaging” enough with her (in her head) witty “engineer” banter.
Perhaps it’s useful to have these people in the office, in a room of mirrors, where they can listen to themselves talk all day. There’s a subset of people who have weaseled their way into tech coming from the world of hyper-anxious very public social media engagement that simply make life miserable for everyone else.
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.