Just commit, no matter the response.
I'm not seeing that as not bravery, its edgy angst.
If someone doesn’t understand or pick up on the sarcasm, it’s not your responsibility to spell it out for them.
You do you, man. I'm not interested in insulting or offending people because they can't parse my vague joke text on the internet. Why would I risk ruining someone's day on a chance a silly joke could be perceived as thoughtless hate? I'd like them laughing with me, not taking yet another tiny piece of their soul that this life does to us everyday anyway.
You add /s because you don’t want to be held accountable.
Damn right! I also don't hand loaded firearms to children because I don't want them hurt. Why do you value your humor so much you're willing to hurt people?