For most people, there’s little to no exposure.
The exotic trust structures talked about here are money laundering structures, which exist because gullible voters are duped with tales of widows losing houses and farm families losing the mythical family farm. There’s a reason why the home base for this is a state with weird banking laws where there’s more cattle than people.
Mitt Romney’s (I point him out because of his fame in this regard, he’s not unique or alone) great-great-grandchildren will be living off some untaxed trust 150 years from now when we’re all dead.