You said -
"Posie was probably spoiling for a fight". You are suggesting (with no evidence) that KJK was significantly responsible for the conversation about politics that the driver inappropriately started.
"This person did not need to be told about women’s spaces". No, and he wouldn't have been told had he not started the chat. You are suggesting that KJK should not voice her opinion even though someone else has voiced theirs, and opinion which KJK thinks is deeply offensive and dangerous,
"I am sure they [the driver] knew and were also looking for a reaction". You are telling KJK that she has an obligation to take the moral high ground in her own home when deliberately provoked. I do not think that she has any such obligation.
"Posie inflamed a situation unnecessarily". You are saying that she should have prioritised de-escalation over disputing the nonsense someone was inappropriately saying. (This may be true, but only for reasons of her personal safety).
"A simple “I don’t agree with you and I would like you to drop the food off and leave as soon as possible “ would have been adequate. Still, it gave her material for her podcast didn’t it?" You are telling her how to frame her own opinion in her own home despite the fact that the conversation was only happening because a TRA was starting a political argument on his bosses time!
Sorry, I get the distinct impression that you are both unfair in your assessment and massively wrong to be telling KJK how she should behave. I think that me telling you not to tell KJK what to do is very different from you telling KJK what to do.
Maybe I'm missing something.