I used to do re-inspections all the time.
Then I found out my insurance carrier would not cover them, so I stopped. Got a lot of grief from clients, Realtors, etc. In turn, I went to my insurance carrier and complained.

My insurance carrier reversed itself and will cover re-inspections, so I'm back doing them.

Most of the time, I try to talk my clients out of them. I tell them to get paperwork from the professionals that did the work, and many things they can see for themselves. If they do need me to come out and look at something, I will do it - it just costs them more money.
JF