Jon Pretty sounds like a complete creep and yes, based on this account, a predator. That being said, there is a court and criminal justice system for a reason. While I empathize with the author, and utterly despise the archetype of high-status men who use their status within programming communities as a tool to target women, I find the nature of these kinds of posts to be counterproductive. Therapeutic to the author?…
In general I don't like it as well because it could lead to abuse as we just read - but that's also not always black or white. In some cases it could be real romance or attraction between two adults, even if one has a higher status than the other (that's of course not what happened in this story! I'm just saying it could be consensual, even if the "high status" person uses his status just to get sex. Movie stars and rock stars do the same thing.