Your bolded sentence is exactly the point.
These groomers befriend children they want to molest, carefully choosing the ones made most vulnerable by weakened education, weakened values, and absent fathers. They may start out as strangers, but they deliberately become "friends of the family," Dutch uncles, if you will, so they can gain access.
So when mom, who divorced her husband because he was a Trump supporter, decides at the last minute to go spend the night meeting people at the the Rainbow Bar, who better to ask for last-minute baby sitting than that nice Mr. Jones, who always asks if there's anything he can do?
Mr. Jones will be delighted, especially if he finds out that mom has taught her kid to try out different genders before he decides.