Thank you.
More than anything, fundamentals make the game easier in all sports. Truly gifted people that are purely talented can excel on just hard work alone. But not everyone that plays on a professional level is naturally talented. A lot of them had to drop their bad habits in order to move on to the next level. Maybe the biggest difference between a shortstop and professional. A lot of people peek at B speed and cannot get to the next level, I would say most of that is due to bad habits that you either don't know about or just don't want to put in the time to fix.
My good friend recently changed a lot of his fundamentals thanks to some advice from Jason Klatt. His game went from solid B speed down to weak B speed very quickly... to Solid A speed over a couple months. Changing small things helped a lot in a fairly short time. Who knows where his game will be in another few months.
There are certain fundamentals in the game that help and most of the pro's have them. A guy like Klatt wants to tell a person a few things that might help a person would be a fool not to listen and see what the reasons for those changes might be. Alot of people think "fundamentals" are some kind of miracle stroke or a infallible aiming system which is where others start to go "errm, hold on now...". There are key fundamentals in the game but alot of people cannot recognize them and IMO alot of them cannot be taught any more then a 130mph tennis serve can be "taught". You can teach a person the basics of a tennis serve but extreme accuracy and power are the result of tremendous amounts of hard work, atheletic ability, and natural talent comming from hand/eye coordination that some people are born with at far higher then average levels.