A browser test result is a signal.

It is not an explanation.

“Passed” tells you that one workflow completed under one set of conditions.

“Failed” tells you even less. The product may be broken, the test may be outdated, the browser may behave differently, the environment may be unavailable, or the assertion may be looking at the wrong thing.

As test suites grow, the limiting factor is rarely execution speed. It is how quickly the team can turn a result into a decision.