But what's the build up? What's the punchline? Like, it just seems like a random comment scolding the author for using mature language. If you want random people online to know your joking, frame your joke correctly?
Not all jokes need a buildup or punchline. If it isn't your type of humor, it isn't (simple jokes are still jokes), but the ">:(" at the end does suggest satire, a serious complaint about language would be different than this /nm, I get confused at tone over text myself