"What happens in a coding interview is incredibly well documented at this point."
Indeed. And so much so that a whole industry has sprung up to teach people how to play the game. Pretend you've never heard the problem before despite having learned to solve it via Hackerrank or Leetcode. Ask lots of "clarifying questions" to the interviewer to show them how "you" think. Then in a feigned stroke of intuition produce the optimal solution on the whiteboard.
>"If you can't be bothered to prepare, study, and brush up coding skills for interviews, I do not want to hire you."
"coding skills for interviews"? As opposed to coding skills required for the actual role your company needs to fill? It never occurs to you that good candidates might be too busy making deadlines to spend their nights and weekends working through LeetCode problems? This is why hiring is broken.