To start a call, there is a requirement that you are 1) Using the Brave Browser 2) Have Brave Rewards (their crypto-and-ads service) turned on. Not loving that. Edit: the first one is fine (although a little strange that it is a requirement here but not for their other products, like Brave Search). I'm irked by the second one.
I bet you are loving that it's free though.
There are different definitions for "free".