there's no reason monogamously married people can't be kinky too

Yep, as I know personally :-)

There's unfortunately some "vanilla people are boring repressed prudes" stuff in kink communities too. I realize it's pushback against the crap we hear about ourselves regularly, but it's still simply not true. LKH has heaping helpings of both poly and kink superiority complexes, which is particularly grating from her because she hasn't got the first clue what she's talking about regarding either of them. Regarding kink, the practices she preaches are actively anti-consent and unsafe.