It doesn't really help the United States create good law. You could argue that it worsen the quality of laws by forcing kludges to be built on top of kludges.
A sortition panel collecting random people from all walks of life to give feedback on law would probably improve the quality of law more than any amount of procedure and paperwork ever will.
We mistaken paperwork with deliberation and quality control.
The argument isn't that it helps the US create good law. It's that it keeps the US from creating too many bad laws.
"The more laws, the less justice." -- Cicero
I’d go further. To bypass the deadlocked congress, obama used executive orders in new and expansive ways. That ratcheted things up. Now trump is using executive orders even MORE expansively, to do things that are patently undemocratic and unconstitutional (federalizing who can vote, ilegal tariffs). The kludges and hacks are causing a crumbling of democracy, not just mediocre law.