I agree with you, for what it's worth. I think some of the "easy" leetcode questions are probably a decent filter, they're often contrived enough to force you t handle an edge case or two but simple enough that they should be solvable within a few minutes - they're a step above fizz buzz.
They filter for a few super important qualities - can you solve a simple problem, follow some basic instructions, write somewhat comprehensible code. But most importantly, if you get stuck, how do you react. If your response is to lash out and blame the questions or the interview, that's a huge red flag that you're going to react like that when challenged in the work place. I wish I wasn't speaking from experience.
They filter for a few super important qualities - can you solve a simple problem, follow some basic instructions, write somewhat comprehensible code. But most importantly, if you get stuck, how do you react. If your response is to lash out and blame the questions or the interview, that's a huge red flag that you're going to react like that when challenged in the work place. I wish I wasn't speaking from experience.