When someone says “With all due respect…”, they’ll inevitably follow it with an insult. In that case, the person is therefore also implying that the recipient is due NO respect since they’re insulting them. Boom, double-roast. Maybe obvious, but apparently not to me… with all due respect to me.
[unfunny guy analysing the whole thing]
The case with “with all due respect” is a lot like Japanese 貴様 kisama: misplaced respect is interpreted as ironic and sarcastic, thus rude.
Because, like, there are a few cases where “with all due respect” is genuine, but they all involve someone in a hierarchically inferior position contradicting a superior; student/teacher, underlying/boss, etc. In those situations the expression is there to convey “I acknowledge my position, and I’m not questioning it, but I need to say my honest views”.
On the internet, though? Hierarchy? Mpfffffft. [/unfunny guy]
inb4 I got the OP, on “all due respect” + no respect = “this is how much respect you deserve: ZERO!”. I’m just nerding out with language.
Not everything has to be funny. You’re correct.