I agree with this now. I just went through some interviews and I should have practiced more leetcode, should have practiced whiteboard pseudo code and should have reviewed my big-o. With 10 years in, the skills needed to demonstrate knowledge in an interview are stale because things like big-o are internalized/intuitive and don't often come up in actual work (as something that gets discussed much as it might in an interview, YMMV).

I really resisted buffing up in my interview skills because it seems silly but I realized after the last couple that it clearly impacts the perception of those interviewing you (should have been obvious as I'm interviewing others but not all places interview the same -- we don't ask much about CS fundamentals). And that perception likely has a big impact on your compensation negotiating because you're going to get pegged lower than your ability and be less desired unless you can clearly demonstrate your knowledge.