Statistically speaking, would you hire a person that's good at leet code, or one that isn't?
Probably it's not directly related to what you will do at the position, but if it takes you 1 week to prepare for an interview and you can't do that, I believe that speaks a lot regarding someone's qualifications.
during an interview in my experience it is timed AND you need to give the optimal solution AND you need to talk while coding
hiring those good at leetcode will get you a team consisting of people who had the time to practice and are good at practicing. that’s it.
not passing leetcode interviews has no meaning regarding someone’s capabilities.
and BTW i am not talking about a basic for loop type problem.
And I say that as someone who decidedly belongs to the latter category.