Faking Covid, so she won't go on a trip to a fancy resort with nice food and have fun with her coworkers.
That sounds caring to you. To me it sounds so scared to die that you don't want to enjoy life or are prepared to let others enjoy life too.
No, this is about you feeling the need to control your wife. People die from all sorts of things. Make a plan what to do if she isn't there anymore (either passing away or getting enough of a controlling husband).
Your wife has a job and that brings responsibilities. That you can't understand the value of teambuilding is sad but that doesn't give you the right to control your wife in such a matter.