Why should they make new rules like that?
The thing is, not every ICO are scam, even there are so many projects that help people, not only financially but also in their real life too.
I don't think this new rules from facebook is a great idea, this rule should be cancel though
Still most of ICOs is scam and it's compromised itself and undermined the reputation of all crypto world. I bet that is the reason for some countries to ban crypto currency and FB did the same. And that's sad.