Obviously non ethical hackers can get paid non ethically. Anyone can get paid non-ethically after all. It's a fact that's so trivial it's useless if you just take it for its factual content. What makes it interesting is the implication that people use hashcat for unethical (and/or illegal) activities and use the proceeds from that to pay for their time improving hashcat. The comment doesn't state that, but it's what we are all thinking when reading it.