Bit of a difference there, mate.
Anyway, if I was to misgender someone and they took offence then I would apologise and tell them that it wasn't my intention. If I misgendered them again on purpose then I'd be the knob.
How hard is it to be civil with someone? I've spoken to a few people about the pronoun stuff and I don't fully understand it, but I don't have to. If someone wants to be referred to as "her" and you purposely refer to them as "him" then there's something wrong with you.