I fail to see how British sarcasm qualifies as a personal attack. Specifically in reference to plain English that is the specification of the NRC as cited

I'm a fan of British wit, but these things don't necessarily translate across contexts. On a broad and shallow internet forum like HN, a line like "if you can read and understand plain English how about you go make yourself a couple billion dollars" pattern-matches to boxed wine sarcasm, not ripping port sarcasm.