what's the purpose to leave bitcointalk? is everything ok with monero?
bitcointalk i a great way to hear your communty. imo
Monero built its own forum, and left bitcointalk.org forum. It's always easy to manage on your own forum, so it is likely reason. However, it's not too good to leave such a huge forum, for bitcoin in specific, and crypto in general. Monero team left the forum since 04/1/2017 (last edit time of the OP). It means they left the forum more than two years ago. You can find out more in the Monero forum:
https://forum.getmonero.org/