GTFO. They are saying that regular donations are so much better that they prefer them even if they will receive less money. Isn't that obvious? If you have $4k in the bank account today you can in theory hire a permanent dev but you don't know if you will be able to pay him next month. If you have $3k per month in regular donations you know that you will be able to pay someone as long as people don't cancel those. Which will take some time. Which gives you the stability needed to hire people.

Phrasing this as "gnome has too much money" is malicious.