[vmception]

This is a false dilemma.

The point is to find another evaluation metric.

Did you give your guy an IDE that he would normally use? That your company normally uses? A real world problem to solve? Resources he would normally use? Resources people at your company use on a day to day basis?

White boarding or using codepen isnt remotely close to evaluation for the actual job, and neither are data structure brainteasers, curious what you and your candidate did.

You got one false positive and now want to use a system known for its false negatives.