The Silent Observer
I would even argue it's not only paying customers, any given website is worthless without its users. If you have any kind of semi-decent audience, you make them money without them paying you by gnerating clicks, and suddenly the lame "you should be grateful they even allow you to sleep in that dirty corner" guilt-tripping line is a lot less effective.
And you start expecting at least some respect, especially if the website is not that great in terms of management/interface and its only real perk is having the biggest amount of users out there. Even then, FA is still a relatively small site. Not at all unique or irreplaceable (or rather it's unique for bad reasons).
Can't have a lot of users if other users actively promote the harm/death of other users for their ethnicity or sexual preference either.
That's why rules like these exist.
If people didn't want FA to thrive, no one would be actively supporting it by subscribing to FA+. No one would be buying ad space, and everyone would have moved to other sites. But they didn't.