I wished there was an option to donate using debit card without having the donation tied to any online account or identity, or being publicly disclosed.
I won't go through the trouble of trying to set up cryptocurrency again, just for donating. I have no real use of it, and when I tried some years ago, it wasn't possible to get Monero through any reputable company in my country, only shady sellers I couldn't verify isn't involved in criminality. And they took 30% fee, which feels like a huge waste of donation money. And I never got a receipt for the donation, so could never feel certain it arrived.
It isn't a big concern for me if GrapheneOS don't want to set this up, I'll just keep donating to other privacy projects like Tor Project instead, which does offer this possibility. But I would like to donate to GrapheneOS project too.