Safe to say that MIHC is certainly passionate about what he teaches! A rare trait among most instructors these days.
In my earlier training days, my instructor thought that flying wasn't hard enough so he used to get me to count my 7,8, or 9 times tables backwards. Sounds easy, but try it during steep turns, if you don't get to 0, start again!
Call me a nerd but I loved those flights (and the challenge)
The reason why cars and flying machines are fitted with all these fancy bells and whistles is for one main objective, SAFETY.
I've made errors calculating my TOD before using my brain, how many times has my pocket calculator made them? 0. But a solid understanding and a mental check of the math confirms that.
Math is a requirement for all facets of flying.
Use all tools that are available in the cockpit, car or Segway
to get you and your passengers safely to the destination.
I personally enjoy the challenge of using my noggin for calculations. But I'm not going to judge someone who doesn't enjoy maths as much as I!