Yep, I see your point.
Even if we say there is a constitutional right to abortion, how does it follow that there is a constitutional right for taxpayers to fund a specific abortion provider????
I know; I am on your side. The case must have been made that cutting the funding was going to make abortions unavailable. And the judge thought he would save it from going however many more steps to the SCOTUS by just blocking the state from defunding.