Is it really a grift if the person is upfront about asking for money to pay their medical bills and there's no expectation of a product that isn't being delivered? GoFundMe isn't pretending that there's a laptop or shoes or something expensive and then not delivering aka a scam, it's straightforwardsly asking for money to pay for medical bills.
Internet people are weird. Not all of us though, obviously.
https://en.wikipedia.org/wiki/Belle_Gibson