I think the it would make people easier to discuss with someone, like quick questions that doesn't worth opening an issue, or just talking about something related to ezpp!.
Also, I am not too familiar with this feature since it's pretty new feature, but it may be easier than a Discord server, because we can search/track the discussion.
oamaok
commented
3 years ago 
Let's try this out!
I think the it would make people easier to discuss with someone, like quick questions that doesn't worth opening an issue, or just talking about something related to ezpp!. Also, I am not too familiar with this feature since it's pretty new feature, but it may be easier than a Discord server, because we can search/track the discussion.