Springhole.net, one of the remaining early internet sites with a mary sue litmus test, has gone regressive and put up a note in the mary sue test page demanding people stop using the term by falsely claiming that the term is "just used to tear down female characters simply for having a prominent, active role in a story.".
mary sue test page with the note https://archive.is/CyVWS
info page with another note: https://archive.is/ct27G
A newer page that tells people to move on from the term: https://archive.is/5Smbi
When I think of Mary Sues, I first think of Wesley Crusher, but I'm sure he will soon be the last one I can recall because there are more of them all the time.
Eh, even Wesley had moments bringing him down. Like dying. And expulsion from the Academy.
Minor incidents on the way to godhood.