It does not matter how us think, I believe these detail-oriented algorithm interviews are intentionally designed for younger coders who can still do them out of memory, though in practice they're not very meaningful and if you really need them sometime you can always dive-in and get what you need.

I'm doing leetcode now, as a senior engineer there is no way to get a decent job without being tested like a college fresh-out as far as programmer positions are concerned, no complains, I will do them, it is the market picks me, not the other way around.

To me even though this is painful, but at least it is "merit-based", what I dislike the most is that you got a job based on other factors instead of how able you are.