I don't understand social queues

Can someone help me understand something. It might be my neurodivergent brain or people chronically online have extremely short fuses.

So, my neighborhood has this unofficial group on facebook & one member has been mass-posting the last few weeks. Some people have made posts voicing their frustration, but the latest post I finally spoke on because for some reason it's the one that has any comments on. All I said was that if anyone had issues with mass-posting, they should just block that person or scroll. The op replied with "thanks for your input," to which I responded with "I don't know if you're being sarcastic or not, but it's an option instead of complaining about it." And they lashed out at me, saying it shouldn't concern me because I don't even live in the neighborhood & that I'm now blocked.

They posted it anonymously, but I think I know who posted it because that "you don't even live here" line is a favorite & they are always quick to lash out. The only thing that makes me think it might not be them is how the post is written, it's not all what do they call it? Word salad? Word vomit?

If what I said was wrong or came across aggressively, I'll take accountability. I just want to know if it was & understand why.