I generally consider them ill-informed of the consequences. Most of the time they do it because everyone else seems to be requesting funds that way.
Changes to taxation may have pushed even more people to request FF, but as I stated they are at a greater risk of their account and funds frozen, since this has not escaped PayPal's attention too. But everyone has a different risk assessment of any situation, this being no different.
Sorry, maybe we could ask your "friend who works for Paypal" about it.
The fact is, Paypal isn't the only game in town, so even if they were to freeze peoples' accounts, sales are still going to happen, and (to bring this back around to the facts) those payment methods won't have the "protection" that people are used to. Simple as that.