>“I’ve found that some conversations online escalate to shouting matches quickly”
How many people can find a group of people IN GENERAL (online/offline/anywhere) that doesn't rapidly devolve into power/politics/passive & active aggressive behavior? Go spend some time on a forum like metafilter where you have to pay $5 to comment and the moderators aggressively prune any opinion that doesn't tow a nominal progressive line. Even with all of that you end up with some of the most breathtakingly toxic behavior I've seen on any forum.
In my opinion Leap is a wonderful innovation. It will help lots of people realize being an asshole does not know gender.