Requires PayPal or credit card. The suggestion was to pay with your Steam Wallet or whatever payment method already used when you buy a Proton-based game on Steam.

for 99% of people it will also probably be paypal or credit card

> Donate to the Wine Development Fund by cash, cheque, or international money order in US dollars.

IMHO this supports the original point that payment via Steam would be an upgrade:

Sending cash to a postal address isn't low-effort nor low-risk.

Payment by cheque is something I have never done, nor would I know how to do it. I'd have to ask at my bank -- not low effort. I don't know if I'm an outlier here but I have never heard from any of my peers who ever did such a thing.

The same or even worse is true for international money orders. The whole concept of making a money transfer to a postal address is something I have never heard of. Where's the IBAN?

The Wine team is right to put even PayPal before all of these.

The best low overhead way to support them for Americans is to set up bill pay with their bank and auto send checks to their mailbox

Can you have a Steam Wallet without having a credit card?

Yes, I do. It just means that you have to manually "recharge" your Steam wallet when it runs low. That's some effort, but it limits the possible damage if something goes wrong.

How do you "recharge" you Steam Wallet? Gift cards, I assume?

Yep, depending on where you live you can probably find them wherever you find other major brand gift cards.

Paysafe cards. A store near me has them.

i pay for crossover license (wine on mac), if i understand correctly, they spend this money on development wine core as well.