Folks say "you should consult with a lawyer" when the topic is something that's too obscure or marginal to be obvious to a non-lawyer... that doesn't mean the laws are overly complex, just that there are always going to be marginal situations.
I absolutely love how our laws are relatively small, how precedent is from the Supreme Court only, and how most people don’t have any contact with lawyers in their entire life.
We have elements of common law in the US code, and you can definitely have binding precedent that doesn't involve the Supreme Court. As for most folks not having any contact with lawyers... I'm not sure I've met any adult who hasn't.
That's how US Constitution was written (not that it helped a lot - there's still hot debate about what "abridging the freedom of speech" or "to keep and bear arms" means). But most of the other laws are about as readable to the common man as a patch against dense APL code is readable to a seven year old. You may encounter some words you think you recognize. And then there are bylaws and regulations, which most people don't even know exist and some are impossible to get without paying money (yes, really). And then in common law system there's caselaw which is court decision having the power of law. Common man has the chance of a snowball in a nuclear reactor.
I do think that American courts have a problem with this, and I do wish Americans cared more about it. It's fairly standard to hear people over here talk about whether or not something is legal and say "Oh, but I'm not a lawyer, make sure you consult with one before making any decisions."
That always irritates me. Our laws ostensibly exist for the common people, not lawyers. It reminds me of the stereotypical olden churches where only a few people would get to read or understand the Bible. It feels dirty.