No doubt - I thought the flood of (mostly) trolls since the first debate was the straw that broke the camel's back for the mods. Some of the new (or returning) posters seemed to want a serious conversation, but a lot of them were clearly trolls who mainly showed up to talk trash and taunt people, like after beating your rival in a big game.
And I'm still reading and doing some posting over on the old ZZLP, and you're right in that it's mostly the Wild West right now. And what most of the (frankly) Trumper posters are posting is very revealing - just a lot of bitterness, anger, and resentment being directed at how liberal the ZZLP was, how "unwelcoming" it was to Trumpers, along with lots of verbal bile at all the liberals who dominated board discussions, and finally as you said, real glee over the board being shut down. What gets me is that no one was keeping these people from posting there, and no one was forcing them to visit the board and read the posts there, but clearly a good many people were reading the board on a pretty regular basis without posting, and getting steamed over what they read.