Good for you.
Now seriously I'm not sure what you're arguing for - you're saying FAANGS don't do Leetcode style questions? I get it that YOU don't do it to candidates in those roles, but the reality is for SWE roles this is how it is. People who aren't very good in Leetcode will not succeed. There's hundreds, maybe thousands of candidates for these roles and some of them can do the Leetcode thing - they are the ones who get hired. I'm not advocating for this method because I'm not particularly good at it or like solving these things on my spare time, nor do I think this method is particularly useful - but that's reality.