[makeitsuckless]

Because they are unable or can't be bothered to setup receiving payments in a legitimate fashion. This is one good example.

Yes, doing it properly, with sufficient guarantees for all parties involved, is hard, probably way harder than it should be, but there are good reasons why payments are governed by all kinds of rules and regulations.

Paypal is a shady business that allows other shady businesses to cut corners at a high risk. People take that risk because they are either lazy or have no other options, and this is an example of the former.

Especially since it concerns crowdfunding, and not a straightforward transaction of goods for currency, I find it hard to have any sympathy for the "victim". Being a small business or non-profit org is no excuse for playing fast and loose with other peoples money.