Google interview process is designed around how badly you want to work there not what are your skills i.e practising solving bunch of leetcode puzzles on whiteboard and speaking out loud is all it takes to get through the interview process. It just takes some time to prepare.
I think that is basically it. I think many of these FAANG companies interviews are more of a hazing than an actual assessment. Everybody who works there had to go through that interview… if you want to be part of the pack, you too must endure it.
When viewed in that light it actually doesn’t seem quite as bad.