I do not think "taking it to the track" is a better way to learn or even a faster way to learn---but everyone has an opinion.
Riding form is all well and good but won't serve you as well as riding safe.
I think where these discussions always tend to go sideways is when it becomes street OR track, it's quite possible to do both regularly, enjoyably, and relatively safely. I think they both have merit.My $.02 on crossover skills from closed course riding: (not meant as an argument or personal attack against anyone!)DCTC, especially at the lower levels (when people aren’t concerned with going “fast”), is a fantastic way to work on the basics like Body Position, Lines, being smooth with throttle and brake inputs, slowly increasing your comfort level with corner speeds and increased lean angle all in a controlled environment (no gravel, oncoming traffic, etc) that all (minus perhaps the lines) translate well to spirited street riding.Trackdays (at an actual racetrack) begin to introduce skills and riding habits that don’t necessarily translate directly to safe street riding. HARD braking, trail braking, race lines linking multiple corners, riding in close proximity with other riders, high speeds, getting strong drives out of corners, setting up passes, passing through corners, etc.Where there is some crossover value to street riding from trackdays though is exploring the upper limits of modern sport bikes in a controlled environment (to a level that would be extremely dangerous on the street), that will allow you to greatly increase your comfort zone of skill and trust in the equipment (tires,bike, suspension, etc) which means when you are faced with a situation that forces you out of where you want to be on the street you are prepared to deal with it because you have a HUGE cushion left when you are riding at a typical street pace.