My question is: do people who are hard of hearing, but do not benefit from hearing aids and have limited lip-reading skills, ever feel 100% confident in a hearing world at work? (and socially)
The fact that you are asking this question suggests that you already know the answer, ie. ‘no’. Did you just want to check that other people feel the same way?
Having discussed this topic over the last 25 years with a wide variety of hard of hearing people, it’s evident the world is a tough place, and no-one – not even those you describe – ever feels 100% confident at home, or at work.
If there is such a person, I’d like to meet them!
Confident people tend to be those who have some control over their work or home environment. For deaf and hard of hearing people, I have always said, the higher up the ladder you go – the easier it gets. You are more in control of how things are done and can be more explicit about your communication needs.
For those for which promotion is not an option, then control over their immediate environment does help.
But 100%? Not in the real world!