It matters more as agents do more
Today most people use AI to write things and answer questions. That is changing. Increasingly an agent will send emails, change prices, issue refunds, deploy code, manage servers, buy services, deal with suppliers, run adverts, answer customers and move data around.
At that point "trust me" stops being enough, for anyone. What you want instead is a system that can say: here is what I did, here is why, here is who authorised it, here are the rules I followed, and here is the evidence. That is not only compliance. It is what trustworthy automation should look like by default.
The payoff is not caution for its own sake. Boundaries and a clear record are what let you hand the agent more and step away from it. The controls are not the brake on automation. They are the thing that lets you leave it running.