That 1 tenant might eventually orange pill many others in their life. It's definitely going to be a slow grind to help people adopt it and use it though. I'm trying to orange pill my landlord. He's slowly starting to come along.
If you ever want to ditch quickbooks, Firefly III is a FOSS accounting software that supports multiple currencies including Bitcoin. I am using it for my business. https://www.firefly-iii.org/