I disagree,,, I think they are simple to acquire, they are a must to have.
If a player works on fundamentals and doesn't try to run before they walk, it's fairly easy.
When they can't stand properly but want to learn jump shots, that's a problem. Crawl, walk, run.
All we hear for many years now is fundamentals, fundamentals. Years ago you were lucky if they could spell the word, nevermind sharing info, everything was a big secret. In 30 minutes I could probably post 50 links for pool fundamentals,stance, bridge, eyes, etc. taught by champions, instructors, anyone with knowledge willing to share.
Today there is endless info at the tip of a finger. Youtube videos are a dime a dozen, illustration is everywhere.
Put a cell phone on a tripod and check yourself, cut the learning curve with an instructor, weekly lessons are best.
Guitar, Piano , Pool, etc., instruction from masters are all over youtube.
I study guitar and pool everyday on the internet.
Just when I thought I knew everything I find something new, maybe tomorrow I'll know everything.
As a young kid I played Wille after winning a junior straight pool tourney. Our match was part of the prize to play the great Willie Mosconi. He was grouchy and no help to me, barely shook my hand, I was a kid, whoopy do.
Mizerak told me to Get My Feet Under Me, my head did a spin, looked at him crosseyed. On occasion he would nudge my left foot and remind me of weight distribution.
He would put his hand over my bridge hand, don't move, I caught on, I practiced, I'm a statue.
Colavtita and Steve taught me a little trick to keep my head down, it's idiot proof, it's a simple fundamental.
My opinion is fundamentals are far easier to learn than doubling a rail with reverse english with different cue speeds to straighten or sharpen the cue ball. Drawing the cueball back 1 ft. from any distance. Or stun stroke every number on the clock with speed, spin, redirecting the tangent, compared to keeping your head down on a shot, or not dropping down properly.