We’ve had Slack at WAO for ages and ages, but I think there’s a renewed impetus to experiment with stuff which, as @calummackervoy says, helps build the commons economy. I agree that this shouldn’t be at the expense of getting things done, but Matrix is not difficult.
BTW, I don’t think it’s obvious from this thread, so for those looking for Matrix it’s here: #cooptech:autonomic.zone
(Matrix is decentralised so you’ll either need to self-host or choose a provider such as Element)