Have to start somewhere. Update the law as bad actors operate. Observe, iterate, etc. Failure is not trying, or when you stop attempting to improve.

"Show me the incentive and I'll show you the outcome." We are aligning incentives, with policy, to encourage desired outcomes.

I don't know that it counts as a circumvention, having a visible signal of that date continually being pushed back will be very useful.

You're presuming that this is something employers want to circumvent. As the article discusses, many of these postings are likely legitimate jobs which the employer does intend to fill, and they just don't do the work (which has minimal value to them) of ensuring that all the postings get taken down once they've filled it.