Adding to this frustration is a 25yr registered 501(c)3 non-profit I volunteer for that holds an annual art festival. The festival proceeds go to funding educational materials. They've had an active facebook page for at least 15 years, with thousands of followers from around the world.

When the non-profit tried to advertise the art festival on Facebook. Facebook not only denied them, but when the non-profit asked for a review of the denial they were warned if they asked again their entire facebook page would be flagged and deleted.

Facebook is large enough I cannot imagine their reasoning. They very likely have several conflicting streams of logic depending on teams involved. One thing I think is reasonable is that money is a motivational factor for Facebook.

Put simply, organizations who come in immediately spending money on advertising are more likely to be fast tracked. Organizations who don't spent a lot of money are more likely to be shut down. ("you've been a freeloader all this time who will likely not pay sustainably after this one-time payment. We're focusing on sustainable paying customers, goodbye")

Addition: Now that I think about it, I wouldn't be surprised if there is a literal metric of "money/time" ratio. The more money you spend in less time likely improves your chances of being fast-tracked, thus biasing new accounts who immediately spend on advertising over existing ones who sparsely pay.