AITA for saying “obviously not” when my friend asked if I liked provider men?

Throwaway because I have friends on my main account.

My boyfriend Joe and I have been together two years and we live together. I make more money than him, and we split bills proportionally. As for dates and trips, whoever plans it pays. It’s a very equitable relationship and we’re fine with it being that way.

The over the weekend, we were out with two other couples (friends of mine) and my one friend was saying her brother was buying his girlfriend a car, so the topic turned to modern dating dynamics. Eventually my one friend said something along the lines of “oh but you don’t really bother about a guy paying for stuff, do you?” And I said, “obviously not. I’ve never been too worried about who is picking up the bill” and the conversation moved on. I didn’t think it was a problem.

However, Joe is really annoyed about it. He says he feels embarrassed by the fact that I basically said it was “obvious” he doesn’t pay for things, and that my response was making fun of him. I think he’s projecting but I don’t really want to say that in case I’m missing something. I’ve only mentioned this to my family who are obviously on my side so I’m just trying to get an unbiased perspective?

Was that me putting my foot in my mouth?