I think that's probably why it helps the most to concentrate on it while spinning high cadences. I feel like it's the last thing most people worry about.
If you rode bikes as a kid, you know how to mash down. It's natural.
If you've climbed a hill as an adult, you know how to pull up. You do it unconsciously.
If you've done any kind of training to increase your power, you know how to scrape the bottom.
Those things always happen naturally by this point, so the last thing to concentrate on is the kick.
Nail on the head. I need to work on my spinning technique, there aren't any big hills around and I never go fast enough.