To explain in case you are serious, IMO I think they’re meaning you can obviously articulate the point to which you came from where you originated class-wise, and explain in detail at that.
But the “sucker” aspect is to point out how, even if we can find a way, the “game” itself seems to lead many to devolve into an existential thought-process of ‘what is the point,’ when it’s much harder now-a-days to get to ANY point of success like a couple of previous generations were able to (those in their 50s+). If a person still believes that “winning” at the game is still important, then they already lost. Or they’re just a bit bitter and using a mocking tone… hard to interpret tone in text.