I don’t know tbh I’d assume those people donate because they made some money off of the work done on processing and want to give some back to keep development going. I’d think if you wanted to donate to the stuff they’re on about you’d find a non profit specifically for that purpose. I’m sure there are plenty and they’re probably better at it than a software foundation haha.
Yeah, on further examination it looks like a lot of NFT artists created work using processing and have kicked it back, which explains why the donations were so crypto-heavy. It was giving odd vibes for a bit but it seems cool.