Yes you did.
Politeness is a good way to handle the issue. So is being interested in the person or the person's interest in whatever non-interesting subject that is being contended.
Well, yes, I think you
should be polite, but that cannot extend to 'being interested' in something you are not interested in. You can't choose what to be interested in; it chooses you.
I don't give a rat's ass about the Packers and I find most Packers' fans to be far less interesting than the Packers or football. However, it is interesting to me to learn WHY people love the Packers or football or baseball or poker or whatever.
I can agree that you can be meta-interested in something. For example, many years ago, I asked a group of friends of mine (some who watched sports and some who didn't), what it means to 'follow' a particular sportsball team. How is it that you become a 'fan' of one team versus another? I couldn't figure it out, because I know people follow teams where they have no geographical connection to the team, and in any case the people playing in the team are not from the place the team is named after, etc etc.
But even then, I asked because I was interested in finding out. I couldn't force myself to be interested in finding out if I wasn't.