Antibodies don’t do anything after the infection is gone. You have to wait and see if their T cells remember the last infection.

Ive had so many idiots that are vaxxed that they now have super immunity and then end up getting sick again.

Clicking on the "sources" link at the bottom expands and links to this (at least by name, not URL):

https://www.science.org/doi/10.1126/sciimmunol.abn8014

It basically means that there's no purpose to getting the shot because whether it is before or after being 'sick', the responses are the same.