Man I completely agree with you. Having learned the true gypsy jazz rest stroke which was quite a pain in the rear, I realize everybody can learn difficult stuff. However the problem is you really have to slow to a baby steps, crawl, stumble to walk, walk, walk to jog, to run, and the results don’t happen over night. They might not even happen over a week or two, but the longer you ingrain the baby steps, when you start the crawl, stumble to walk, walk, walk to jog process the better off you will be in the long run when you decide to just get the speed to some astronomical limit. It takes an insane amount of patience and relaxation during this if you already play another way or half way know how to do something already. If you can have fun and brush off the fact you are playing so slow it will literally put you to sleep, it will work out great. But if you start feeling frustration due to outside interruptions you will erupt into a volcano of fury.
And the next problem is you need to have very good instruction on the motions, or at least mimic them to the best that you can by watching them done in a video. Because not all of the greats are recorded in HD.