Discord is pretty good at this (channels, not calls), but there are probably even better paradigms (there still has to be a way to participate in multiple conversations at once).
Meanwhile MS Teams wants to put LLMs in their products to scan DMs for problematic thinking. If corporations want to record and scan everything I say, I just won’t say anything anymore.
People should be able to say what they think in any situation without the fear of reprisals.
But it doesn't work that way because management often can't take criticism and so you're left with back channels and politics to get things done.
This is a management problem and a culture problem not a problem with working from home or not.