I had a great experience on Tinder and met my now fiancee... lots of fake accounts on there, but I found them super easy to spot. I only swiped right on women whose profiles I deeply resonated with- nerdy, introverted, and adventurous/outdoorsy women. Usually with simple non-glamorous profile photos doing real outdoor activities in our local region, in places I recognized in the photos and could have a fun conversation about with them. I'd chat a while to see if they were intelligent and interesting to talk to before inviting them on a date.
I don't think it's possible to fake being a deep, introspective, and intelligent person that is also adventurous/outdoorsy and people with those traits generally have no interest in being extortionists.
Basically my tip for online dating: screen online only for personality and character traits, and only later in person on a date for looks/chemistry/physical attractiveness. The former isn't something you can fake online, but the latter is.
Unrelated to my response here, but I feel the need to mention it given the context of this article: you have to be a real terrible person to be on a "cheating" dating site, and deserve whatever you get. In this day and age non-monogamy is pretty normal, just be honest with your partners if that is what you are into. It's not for me, but some people love it.