I couldn't put up with that kind of "attitude problem" from any friend/family, let alone a potential partner/boyfriend.
I can only do with people who actually help themselves rather than relying constantly on "freebies" or other people adapting for them,
Yes, I know all about hearing aids. I have them myself. Yes, the NHS ones can be pretty useless - I've had two sets over the years and neither were helpful at all so after trying for several months each time (with multiple return appointments at the local hospital audiology dept) I gave up with them each time and muddled through without.
But eventually, I realised it was impacting my life and that of my friends and family, and also my work, so I bit the bullet and went private. What a massive difference! Yes, expensive, but the service was second to none, I could get them "tweaked" with minor adjustments to suit my environment, plus different extra settings for loud environments etc - adjustment appointments were free and easy to arrange, none of this waiting for months, they could usually fit me in within a few days for an appointment time that suited me, not the "take it or leave it" attitude of the NHS.
The OP's boyfriend is probably right that the NHS hearing aids havn't been properly calibrated for him, but that up to him to keep going back to get them adjusted. If he still can't do with them, then it's up to him to go private instead to get better ones properly calibrated to his hearing and his environments.
If he can't be arsed to do that, he doesn't deserve a partner/girlfriend!