Let me turn the tables on the guys who want to learn to groove and be "tight" or who are proponents of that stuff before learning music generally:
LEARN TO GROOVE? Ha. Are you kidding me? That's the easy part. Music is generally divided into nice, convenient, concrete beats and subdivisions thereof. Usually no worse than 16th notes- that's only 4 different places within a beat. How hard is that to learn? Even with all of the permutations, it's not that hard once you can see/feel/hear a few combinations of note/rest patterns that you can teach yourself extremely quickly. It is very concrete stuff. Google Cliff Engel Sight read for bass and you can see. On the other hand, any one pitch can go to any one of 11 other pitches at any time. Notes can be added on top of any other note and each of those notes can go to any one of another 11 notes. It is orders of magnitude more complex than learning rhythm or slap or fast plucking. Yeah, people have been inventing, implying, playing crazy harmony forever, self-taught, even. However, it is much easier to "reinvent" the slap/speed/rhythm wheel at home by yourself and with some recordings than it is to reinvent for yourself the wheel of theory and harmony. Therefore, if you want to be great like that, which would you be better off paying a teacher to teach you- mechanics or music?
And to those who say "oh, if grooving is so easy why do so many suck at it?" Maybe the answer is lack of time spent playing, listening and/or serious contemplation of those 4 subdivisions within any beat? "What about 'feel?' You know playing precisely on the beat all of the time is so sterile and boring?" I guarantee that something as nebulous as that comes with time spent playing, or you naturally have it. Keith Richards and Ron Wood laid down slinky lines because they feel it in themselves. And playing on the beat is no more boring to a good ear than is playing the same old harmonically-boring, diatonic/pentatonic-with-added-blue-note crap all of the time. Regardless, it's a false premise to resort to saying groove and feel are more important than learning music (remember monster-ear guys we are talking about people who don't have a god-given great ear- most of us) if one wants to do much more than rock and roll.
The summary, Jeff, is that the average person is average. 49.99999% are below average. Many of the rest are not very much above average. None of them can even fathom the depths of music that are possible. An other many know that there is more but they don't care to even wander outside I ii iii IV V vi and that other one notated with the circle with the slash thru it and a 7
They will never understand and, instead, some of them will prod you. Then there are some of the geniuses (not said sarcastically) who don't need to understand any of what you teach, they just hear it (the number 3 people above). This leaves you with a relatively small audience. Enjoy THEM.
Simply make your case (repeatedly even) and do not engage with naysayers- the naysayers either don't understand or they don't need to understand. Nobody can LOGICALLY argue that you are wrong. Some of them probably readily agree with you to a large degree but their feelings may be hurt that you are somewhat dismissive of their methods, their methods which put food on the table- teaching paying customers what the customer wants to learn- remember who their average customer is. Average and aims for nothing more.
I wish I learned your way. I should be a much better bass player after 20+ years but my foundation has holes in it because I learned too much technique and song-learning rather than music-learning.
You are probably a tortured-genius, or something akin to that. Remember that when you try to change the world the world usually changes you. You have all of the respect of the people who matter to you. Enjoy it. Keep putting your word out but don't engage the naysayers. The right students will continue to find you.