Is this type of chat acceptable on Stack Overflow chat?
This is a case of one community splintering off from a larger community with a bit of animosity as the result, which is bound to happen from time to time. What you can walk away with is this:
If poked, jabbed or just outright insulted, do not respond, flag the offending post immediately and use the ignore feature.
It's generally wise not to go places where you know you won't be well received.
Moderators are not always signed into chat. It may take some time for your flag to be seen and processed. Don't let a bad situation escalate while waiting for us, go find something more constructive to do.
Remember the part of our venerable FAQ that says be nice? That applies everywhere, though the rules in chat are a little more relaxed. If we see a pattern of continued disruptions, we will ban people from chat or even shut down an entire room if the problem remains consistent. If you like having nice things, don't abuse them.
With that being said, I am now closing out this very localized discussion.