Let’s just say, I’d ASSume it is sarcastic irony. But, it can be wrong. No harm no foul. I just don’t like someone to be wrongly libeled.
It's hardly “libel” to post a rebuttal to someone who failed to use a sarcasm tag—
which is a forward slash followed by the letter 's' or the abbreviation 'sarc',
i.e. /s or /sarc )
Things are slipping around here! :-)