An anal pap is a decent idea. I agree that it's not terribly accurate, but if you are one of the ones in the 26-47% that it accurately finds atypical cells, you'll be glad you did it.
I agree that you don't necessarily need it simply because you're a gay man. A lot depends on your age, how many partners you've had (no judgement - just simple math, as the more partners, the higher the chance you'd be exposed to HPV), how often you bottom, if you've been vaccinated for HPV, your HIV status (if you're HIV+, I'm always going to recommend an anal pap, but you take PrEP, so I'm assuming you're neg), etc., etc.
Some docs just follow a checklist, and take nothing else into account, especially if it's covered by insurance.
It's up to you, knowing all the answers to those questions. You use condoms regularly, so your chances of getting HPV are significantly lower, though not zero. If you're younger, say 20s or younger, you can probably wait. If you're older, maybe go ahead and do it.