I mean it feels like 2-factor authentication where both factors are one and the same.

If someone had the willpower to ignore distractions already, they would do so with or without gadgets like this one. And ultimately if they crave those distractions again they're just going to stop using this tool after those 15 minutes or whatever time.

Similar tools have existed for a long time, and while sure there's an opportunity to capture a small market in the same way diet pills sell to a few people, it's nothing novel or even effective at solving the real problem.

This is just yet another gimmick that tries to tackle the symptoms of the underlying issue that we actually like the distractions and need those dopamine hits.