Don't assume that when a person doesn't donate to white blaze that they aren't helping the AT, those 2 actions are not one and the same.
While I haven't donated to White Blaze, I do help the AT. My wife and I are both AT maintainers with the New York/New Jersey Trail Conference.
We've spent plenty of both time and money "helping" the AT over many years.
Let me ask the original poster, how many hours and dollars have you spent in the last year helping the AT????