That's... not all that body language conveys?
Body language helps with basic things like "Oh, Amy is trying to break in and is struggling to make her point", or "Hmm, Doug looks like he's concerned about something, I should ask him his opinion".
Digital A/V communication tools also bring with them a whole host of other sources of friction, including poor audio and video, latency issues, and so forth. They are, at best a weak by tolerable substitute for face-to-face conversations, and quite frankly, IMO anyone who tries to suggest otherwise is not being honest.
You might feel that the tradeoffs are justifiable, but let's not pretend there aren't tradeoffs.
> The big advantage now is that people who would have been steamrolled in meetings have a chance to get their thoughts heard
And conversely, people who type slower or struggle with written communication for various reasons, are significantly disadvantaged.
And that's ignoring the fact that written communication lacks critical nuance (which ends up being poorly filled in with things like emojis) that can lead to confusion and misunderstandings.