It's lovely to see someone actually being honest about this stuff instead of tiptoeing around trying to be "nice".
There is no point in trying to reason with unreasonable people, and I highly recommend Megan's "don't even try" approach. TRAs have been appropriating the language of morality and ethics for years in an attempt to silence critics. It's long past time they got a dose of bracing honesty about how very unethical their own behavior has been in return.
(I also think that the left mostly abandoning the language of morality has been a huge mistake, and we need to reclaim the moral high ground in general. Exploitation isn't just "problematic", it's wrong, and we should say so.)