Supreme Court judges are elected by the same lawmakers that write laws in the first place. Their rulings also cover more than just one state. So, this patches a wide range of laws not just for that specific state, but every state and federal law.

Further, the democratic process and popular pressure has little impact on most laws. The context is first personal conviction as most bills have minimal impact on getting elected, next attention as bills are mostly to long and complex to read and understand in their entirety. Sure, a bill might only be ~200,000 words, but this is a diff that's updating other complex legislation which will then get applied in a huge range of complex situations.

So, honestly having a small group which can debug the law in response to specific escalations is not only reasonable, but also vital.