This is so deeply wrong. This person owes you nothing. You're accusing them of "selfishness" after they've given away thousands of hours of their time... Your entitlement is just breathtaking.
giving away thousands of hours of work does not entitle you to be abusive to your users and contributors. i am entitled to walk away from your project if i don't like your tone.
I dunno man taking 60KUSD a year only to be catty about the donor is a bit entitled as well.