Those things you describe, as typical of anti-Koehler, are specific situations for incorrigible dog problems.
That is not the method for obedience, which involves learning to sit, down, heel, come, etc.
It worked well for my dogs. Kept my best dog ever well behaved though bold and rambunctious with the 6 week version and helped my last insecure dog become more confident (eg, used to be “afraid of ghosts” such as trash bags and cans). Never had to bother with any “problems” that basic obedience didn’t help.
I really don’t care what Dr. Spock inspired treat method promoters think of it, because that is what standard training has disintegrated into.
Regardless, I know of no professional trainers who use it now and it was abandoned decades ago as ‘barbarism’.