H: Person x has no desire for status
E: Person x writes a post about how she’s unlike most other people.
You already assigned P(H) as 0.1 (or quite possibly lower). Now you only need to estimate P(E|H) and P(E|~H), plug it all into Bayes rule, and you’ll see why people are not really buying it. It doesn’t mean you’re wrong—it’s just unlikely that you’re right.
Having lived for 14 years in Italy, my impression is that several commenters severely overestimate the rationality and fairness of the italian police force.