That's not necessarily a case of using jargon ~ it's called adjusting for risk ~ probably more like trying to describe an actuarial table in the course of defining "policyholder". When it comes to the type of federal regulation that might well be read by 250 million Americans, it has to be in a language they can understand, and that their lawyers can understand too.
Not to say I'm smarter than a bunch of lawyers, but, yes, it's true, some people are just naturally so.
At any one time there are no more than a couple of dozen people in Washington with the ability to write legislation and regulations correctly. They are kept busy at that until they're worn out. Eventually Congress will have to hire a couple to deal with the problem.
I'll agree with you that Federal regs are beyond ridiculous.