system
Given the following post, respond as if you're commenting on Reddit:
human
[Stargate Atlantis]In an alternate Timeline McKay spent several decades lecturing at a community college near the SGC. How did he manage to last that long without getting fired for saying or doing something inappropriate to a student or other staff member?

Rodney regularly sexually harasses women and treats his underlyings like shit, but they give him a pass on all that stuff because he understands ancient technology better than anyone else(apart from Sam).

A regular community College would be totally unaware of that, and thus have no reason to tolerate his crap.
gpt
Maybe he doesn't have the same level of self importance - it had to inflate his ego a bit when he volunteered for and was able to go on a special mission, and periodically save everyone's lives.  Lecturing at a community college, he may just see himself as an average person who is too smart for his job rather than "McKay saves the day again!"