If you were being sarcastic, then placing a /s at the end of the post can be helpful, but it is not required.
I have also made blatantly sarcastic posts that lacked a /s, and people took those posts literally, so it is a risk.
But if you were being sarcastic, that’s cool, I like sarcasm.
If I misinterpreted, I apologize.
I was not being sarcastic.