I guess my question is did you join AOPA for its benefits to general
aviation, or for the magazine?

If NOT for the magazine, then throw it away without reading it. I think you
can still file a request with the US Postal Service so they will stop
delivery for you.

If you joined for the magazine, drop your membership and go get a mag that
suits you. Try "FLYING" magazine. Then, you can read all about the fabulous
exploits of Richard Collins.