Tipping is part of the system. A rebellion against one server in one restaurant means the server has a bad day and next time you go, they’ll remember you and not in a good way.
The employer feels nothing. Only the server suffers‘
Are YOU going to help that server fill out his/her resume out to get a better job? Give job training?
There is nothing noble about this. I don’t care if non-tippers “feel shame”. I don’t like eating out with non-tippers because I have to cover for them and I learn not to go out to eat with them again.