The thread here has lots of good discussion.

There is a great AMA on reddit LockdownSkepticism today that is directly related to your question. Dr Aaron Kheriaty is suing the University of California because its vaccine mandate does not allow for exceptions for people who have already had covid and therefore have natural immunity. Dr Kheriaty has already had covid and is suing. People on reddit asked questions of Dr Kheriaty and he answered many of them here: https://www.reddit.com/r/LockdownSkepticism/comments/pq5d16/i_am_aaron_kheriaty_md_as_me_anything/

In addition, information about his lawsuit is here: https://www.aaronkheriaty.com/work