Next you're going to tell me he bought property in the METAverse.

If this is real, I'm curious - Who did he want to sue?
At best, I assume he thought perhaps he didn't understand variable rate mortgages and now he's mad that rates didn't stay low forever. Now his payment has come due and the payment ballooned. "They can't do this to me! This has to be illegal!"
Adding insult to injury, the house goes down in value so he has either lowered or no Home equity line of credit to draw on in order to maybe cover those increased payments.

This kind of mindset is born from lucky timing, lucky everything.
Having never gotten screwed over, obviously someone must have cheated him if he's made a mistake and is losing money. Because he has never lost before.
Imagine how well he would have done if he had been working with more than simply luck of circumstances.