There are lots of enterprisers on the political right pulling in big bucks on right wing politics. There's always room for one more to get his share.
He knows that if he frames it as taking on the state water rights law, that is kinda boring, null and void, so he probably won't raise much money.
But if he frames it as taking on Nancy Pelosi, ESA, or EPA he knows he is much more likely to raise money.
You should send him some