Between 1980 and 2008 "Males committed the vast majority of homicides in the United States at that time, representing 90.5% of the total number of offenders" [1]. Men are much more dangerous. A general rule for a lost child is to seek out a friendly looking woman, since she would be much more likely to help and not harm the child [2].
That's basically nonsense advice without mentioning the baseline rates. If 90% of all sex offenses are committed by men, but the baseline rate of sexual predators is 10 per 100,000, your chance of running into a male sexual predator by chance is 0.009%, and your chance of running into a female sexual predator is 0.001%. Both would be essentially negligible risks, even if one is 9 times higher than the other.
As a man, I respectfully disagree. The link has much value if you're concerned with keeping kids safe, and it's relevant as a direct consequence of the fact that most crimes are committed by men. Your statement about men has it backward. Not all men are criminals, but most violent crimes are committed by men.