Ah yes, I remember he just "stumbled across it".
Edit: As for Titanman, the dude has been trolling the OF forums since as far back as 2015 IIRC. According to him (he once posted on /v/ with a tripcode with his own name) he works in the tech industry and makes "6 figures" and "does RMT with his countless accounts as a side gig, and said accounts pay for themselves". He offered to help anons get in on the RMT business. Apparently it's fairly easy to get into. He's some dude who's despised the direction the game has been going for an extremely long time (for good reasons) and basically does RMT partially out of spite, not just money. He knows him and other RMTers are fucking up the game and is happy about it. Not like SE fucking does anything about it, I mean the guy is still around RMTing after all these years.
Also fun little fact, the name "Titanman" is a reference to "Titanmen", which is a series of gay porno involving big muscular men. This may explain his peculiar habit of choosing male highlanders as his usual avatars.