My post was not about random weird events, but rather specifically about perverts or predators approaching the two girls prior to their disappearance. And I do consider the Tape Recorder Man to be a pervert and a predator, not just a random guy with a strange hobby.
At this point, there is no evidence that Tape Recorder Man was a predator or even a pervert. Tape recorder man could be 1) a guy with a weird hobby, 2) a "pervert" who liked children, but did nothing illegal since talking or looking is not illegal, or 3) the much rarer extreme predator who not only molested children but abducted and killed them.
Regardless of the odds, the police should look into any possible connections. Perhaps Tape Recorder Man met Long Hair Man at the mall, noticed they had a mutual interest in children and became friends, but I doubt it. If my reading of the news is correct, the police never found the Wheaton Tape Recorder Man, although they found P.G. County Tape Recorder Man who had an alibi?
But now that the police have identified (or reidentified) Welch as the Long Hair Man, they could check if Welch had any older friends fitting the description of TRM. Now that Welch, after decades of crimes, has revealed himself to be a sexual predator, the police should be investigating all aspects of his life anyway?