They are actively blocking clients on their social media profiles.
If they don't just ignore them but actively prevent them from contacting Poloniex, I think there's a quite fair possibility that all the problems Poloniex is having are connected between them.
Well even without this problem they are still a very very shitty exchange that nobody should use.
They don't answer support tickets, withdrawals are stuck in "awaiting approval", deposits are delayed. Just a dysfunctional exchange, yet everyone seems to still use it for some reason and think that it is safe to store money on.
If they are really blocking people on social media then it's definitely because of the recent issues that were mentioned before. They removed the trollbox as well meaning that new users can't see complaints.