I mean, "his" income could be in a trust too. There are ways to live basically from trust as if you're a pauper. I've talked to people who do this.
And just because there is a judgment against you doesn't mean the creditor will get every last penny.
Discussion
I draft these kinds of trusts for a living. Not all trusts are the same. While it’s possible to protect a majority of your assets in certain trusts, you have to own the assets to put into the trusts in the first place. It’s true that income from assets already owned by a trust (i.e., investment income) would be protected under the right trusts. But income from sources that aren’t in a trust (i.e., wages) would be made out to him first and he would then have to put it in a trust after receipt. You cannot legally direct wages to be made out in the name of a trust. If wages are levied, it goes straight to the creditor, so there’s no chance for him to put it into a trust. It wouldn’t be protected until it’s in a spendthrift trust. Not to mention, most of the money he lives on is probably in a rev trust which can’t be protected from creditors.
Judgments have to be paid one way or another.