What doesn't make sense about that?
Even if you don't owe me any explanation, if you freely give me a bad one I'm allowed to say there's something weird going on. Especially if you chose to make a fully public post about it.
Read the comment again. "perplexed" "It only communicates" "Am I reading too much into this" "curious". I don't see any implication of being owed more. It's a criticism that the post is not leaving the message that is intended.
It's not the same, but it reminds me of the quote: My "Not involved in human trafficking" T-shirt has people asking a lot of questions already answered by my shirt.