I read the post with the email a few times, after reading the post right after before reading more. I was lost about the problem.
I got a very different feeling from the tone. I got hey, I've been burned before, it sounds like you're not someone who is likely to give me the same problems, if my assumption is right, give me a call. If I'm off on my first impression and you are a heavy drug user, don't bother wasting either of our time.
I've had a similar experience with people renting next door - meet them, talked to them cheerfully, mentioned how horrible the last people were (every door in the house had to be replaced, carpets replaced, etc). I hope my tone conveyed to them that hey, I'm happy to have new neighbours where we can get along. Not oh, more renters you're probably going to suck like the last group living here.