Earlier quoted context omitted.
By asking a question in the negative form ("don't you think...") you are implicitly asserting what follows is your interlocutor's opinion. This is where you are wrong. By phrasing it in the negative form I am implicitly asserting that I think that what follows is not my interlocutors opinion. So, no straw man.
Oops, forgot the "not" there. The rest still holds.
You're flat out wrong, and it's clear that you don't understand what a strawman is. It is more than just 'misrepresenting' your opponent's argument, which in any case I didn't do.
A straw man is where you present a weakened form of your opponent's argument in order to more easily defeat it.
https://en.wikipedia.org/wiki/Straw_man
As you have now acknowledged, I did not present any form of my opponent's argument at any time, let alone argue against it. What I did was to ask a question to put his statements into context.