As I posted earlier in this thread, I wear actual hearing aids and was able to successfully scan my clinically sampled audiogram (hearing test chart) and use it with my AirPods Pro 2 to adjust sound quality for my hearing abilities.
I had no illusions about using my AirPods as daily-wear hearing aids, but adding my audiogram did improve listening quality for me and I did try the AiPods out as temporary hearing aids.
If you're thinking of using your AirPods as all-day-long hearing aids, be prepared to charge them at least a couple times during the day. I found that leaving the Hearing Aid function on drains the batteries quickly.
In the three hours I used my AirPods as hearing aids, my battery drained nearly 50%.
They worked beautifully as temporary hearing aids and when I see my audiologist later this month for an updated hearing test, I'll scan it again with my iPhone and update it for my AirPods to use.
To access the AirPods Settings menu, you have to have the AirPods case open (not necessary to remove the buds).