If you use the wrong image name then the error you get states:

Timed out waiting for [100000] milliseconds for [Pod] with name:[unknown-pod-name] in namespace [jenkins]."

Instead I'd hope for a message closer to:

Unable to obtain pod with name: [unknown-pod-name] using image: [image] - image not found.

This would be extremely helpful for end users and SaaS Ops in differentiating between server timeouts and configuration errors.