Too many buying generators seem not to understand the proper handling nor use of these. Sounds like you do. Sadly those who don’t will pay a serious if not deadly price.
An aside on generators. My brother’s condo (empty - they are snowbirds) had no damage in SW Florida, but the main generator for the building broke down. (They did just find a smaller one). He said it turns on automatically every week or two and runs for 20 minutes. No issues.
After three hours of running the belt broke and some other parts failed! Sounds like they need to run a 6-hour(?) test every so often from now on. I fire up my little generator when I remember to, but not often enough. Although I’m guessing my little one to run the freezer, fridge and a few lights doesn’t have all of the issues a large one has.