Really insightful video, I think 1 thing to note, while it does appear effortless, the elite quicks are running in rapidly,. They're not jogging in, it's a gradual build into a sprint, but their rhythm is so 2nd nature it appears effortless. You want to be able to do everything that is in this video at the max velocity you can achieve.
While your technical side of bowling fast and the necessary things you need to do to bowl fast is true your idea on fast bowlers bowling 140+ effortlessly is bullcrape you can count on one hand fast bowlers in the world bowling 140+ consistently at least which what really matters
3 Things Fast Bowlers do to bowl 140kph+ Effortlessly ( Bowling Action )
Love from Pakistan