Wasn't aware of that as for actually judging the content they banned i am not going to purposely look that up, not that i am squeamish or anything.
But this is more about them banning exactly those kind of people, how much it impact them probably not a whole lot they still have their forms of conning people into donating money to them.
Don't feel that much for Patreon and i am certain if they went bankrupt the void would be filled relatively soon as there appears to be a demand for it.