So you are just being obnoxious and not attempting to have some greater purpose of "holding a mirror up."

It's not one or the other. In this case, I wasn't even trying to be obnoxious, but rather to call someone out.

Tthe best way, and the way I would have done it, is going "what makes him different than BLM if its just property?" Then you say that.

Yes, asking people questions that they cannot answer is generally quite a good strategy.

The only difference between then being, you wouldn't get to call someone a moron and relish people hating you.

I neither mind nor relish it.