Talk to the person and you will (1) hear a lot of bullshit and (2) filter out a ton of good but not really silver-tongued candidates.
P. S. I hate coding interviews.
P. S. I hate coding interviews.
But, yes, this is more work on the recruiting side.
As a side note, I totally get it why large organizations would use Leetcode though. It does help filter out false positives if you're willing and able to bear the cost of passing on many good candidates.
Not really silver-tongued candidates? Well, what's the problem? Unless you are looking explicitly for silver-tongued candidates, you should ignore this "trait".
"What is a binary tree" will filter out most of the bullshitters.
None of this stuff is rocket science. We have a responsibility not to be lazy when interviewing people.