Typical, everyday human treachery is not addressed by the legal system...

I suspect we're referring to different things as 'typical human treachery'. I was referring to, for example, theft and failure to uphold financial agreements, which I believe are adequately addressed by the legal system if the victim makes the expected amount of effort to have them addressed. (Also, less relevantly, physical assault.) What were you referring to?

...that swapping out your predicates for others would achieve an equally true (for the general case) statement, yet be more obviously invalid.

The rest of my statement in the relevant section was explaining that I don't, in fact, expect people to trust me given only the amount of evidence about my psychology and habits that I've given here. I also wouldn't expect people to trust me if I gave the amount of evidence about my psychology and habits that you've given, which seems to me to be less than the evidence that I've given, assuming that one accepts that I'm human. (It may, however, be relevant that the amount of evidence that I expect to have to give in order for someone to trust me is usually more than the amount of evidence I actually have to give in order for that person to trust me.)