However, I tried this exact scenario several years ago when a tenant accused my handyman of stepping on their washing machine and breaking it while fixing a roof repair.

Bad tenants will often have judgement against them, so when you run a credit report and see "XYZ Property Management", that is your best clue.The other side of the argument is that some tenants are falsely accused or over charged. 

Don't accuse just say we have had issues with the basement so we locked it. 

Is this forum about baseless accusations?

I'm not assuming the accusation is true, I'm curious to know how more experienced investors sort thru these kinds of situations?

Now, the result is death.An 85-year-old man died over the weekend after a shoplifting suspect ran into him while fleeing with stolen goods from a store in San Francisco, authorities said Monday.https://www.sfgate.com/crime/article/Fleeing-SF-shoplifter-accused-of-murder-after-12985386.php

You spent one minute typing a post here accusing him of being fake.

He talks about doing an accusation audit or finding out what their concerns are and being prepared for them as well as using mirroring techniques.

If you are not evenly applying a standard, you can be accused of discrimination.

To accuse us of the actions he does is a poor decision on his part.