You got a link? I'm guessing the context of him talking about class pairings is the same refrain he's said over and over again that people tend to date within their circumstances and surroundings. It would be difficult to imagine a situation where a male CEO or something hooks up with a cashier at a McDonalds because there's no real opportunity for those streams to cross organically and they're not likely to be seeking each other out specifically.

He's talked about how common it is for streamers to hook up because it usually takes a fellow streamer to relate to the issues streamers deal with. In Melina's case, I believe she was a streamer when she connected with him and had the aspirations of being a successful streamer at that time. I think at this point she has employees, or maybe I'm miss remembering and she's still doing everything business wise solo, but the idea is they inhabit the same professional space with similar professional aspirations where they're more likely to connect and relate. I think she was doing travel vlogging moving around Europe or something when they hooked up, I don't remember the timeline exactly but that's my impression.

That's a far more likely scenario of two people hooking up at different ends of success within the same industry than two people hooking up from different industries that do not share the same class.

Could a CEO take a pottery class, hook up with the instructor, and then after they fall for each other they find out they're from wildly different circumstances of wealth? Sure, but that's more like the plot to a Hallmark movie than it is realistic dating advice.