I was pitched on privacy. Whether I and others believe we were lied to are subjective judgements.
> you'll have a hard time charging back
No, I won’t and you likely wouldn’t either unless you’re constantly claiming chargebacks.
> They'll hear "donation", "I authorized this charge", and deny the chargeback
Six figures (and counting) already approved by Amex for a series of donations a friend made over a year ago!
> AFAIK chargebacks are basically adjudicated via arbitration by visa or an independent arbitrator
Depends on the card association. But usually, “the issuing bank makes the final decision on whether to accept the chargeback” [1]. The merchant has recourse per their merchant agreement. But the money comes out of their pockets first. And given it’s a donation, there is an almost zero chance that Mozilla will win.
[1] https://www.clearlypayments.com/blog/chargeback-statistics-i...