I have and I can't think of anything worse for developers. Being on the phone all day, group solving problems is a great for the below average to hide within the group.
If you have people wanting to hide from contributing then there is a bigger problem in the team I would say. But otherwise, why do you think it’s so bad?
The entire day on a call with a headset is one aspect. The waste of 3 or more resources trying to solve one problem is another. Changing a solo activity into a group activity means you can never go deep into abstract thought or take the time to pause and reflect. Too many cooks in the kitchen is the old saying goes.