It was a combination between Patreon and Github Sponsors for solo the lead developer at the time making several thousand USD per month. Those campaigns are still ongoing AFAIK, but the contribution amounts are now private.
Developers are allowed to get or ask for contributions, donations, or sponsors.
To add to the strangeness of how its being mischaracterized, was the apparent jealousy (back in 2019) over the amount of donations that other developers got. Then for certain ones to have got so upset at getting less, they started to bash and publicly ask people to give them their money instead.
Somehow, it's OK for X to get money for their competing language, but it's "wrong" for Y to get money for their language.