My 84 year old mom uses AirPods Pro 2 as an aid for moderate hearing loss and has been satisfied. As others have noted, the difference is night and day; I went from having to yell just to be occasionally understood to being able to have a normal conversation.

My understanding is they are pretty good hearing aids, but they don't have the battery life that purpose-built aids do (4-5 hours vs 18-24) so they're not optimal for full-time use. This is fine for her use case, since she only uses them when she wants to talk to someone, but could be an issue for someone who wants to wear them all day, every day.