I need help now != support my ongoing work on x
my point being, that it's irrelevant that William got $2500 fast. the question is how many people on the platform have been able to earn anything more than just a random occasional tip on it? Is anyone getting even "poverty level" worth of donations (~12k in the US because our gov't has no concept of how much things cost).
Meet Jo Qatana. A small-time embroidery artist who's making ends meet with BuyMeACoffee. She's one such creator who's receiving donations from her audience on a regular basis.
"Thanks to the Generosity of Strangers, and Friends, I've made a car insurance payment and can finally buy the supplies I need for my @PPact fundraising item. I am So Very Grateful." - https://twitter.com/joqatana/status/951943659301187584
'Buy Me A Coffee' is just a friendly way to ask for support, and do not suggest the size or consistency of support one could receive. Contributions very well depend on one's audience and creativity.
William LeGate, an activist (#boycottNRA) used BuyMeACoffee just yesterday to raise $2500 in less than an hour: https://twitter.com/williamlegate/status/968630079285686273
It exceeded all his expectations, and I think the branding and it's friendly tone went a long way in achieving it.