Here is a short link. A lot blown out of proportion. This is a very respected expert.
https://krocnews.com/mayo-expert-most-covid-19-victims-wont-know-theyre-infected/
If you are a belt and suspenders type person, you could also keep a charged jump pack with you as a standard boat item. It may not start your mains but will give you enough juice to start the gen. I have seen this done and they connect using the 12 volt outlet to "jump" the generator.
I have used the Johnson switch, I love it, the one i used was a magnetic switch and also required a third wire (ground) but is well worth it. I replace my rule switches almost every year, not any more with the Johnson Switch.