Imagine if interviewing rewarded "look I know all this stuff about writing simple functions in Stack X" less than "yes, the project shipped, and beat its deadline, because we decided to use library Y that the devs already knew even with the acknowledged pain points, instead of bringing a new technology in just for this project. We have some less-mission critical areas where we decided to experiment with new tech, but needed something predictable here."
Evaluating a senior dev based on junior-dev-esque implementation tasks instead of "does this person know how to avoid over-complicating our job?" is ludicrous. As an industry we interview to find "clever" people rather than "wise" people.