Is the idea that a different label would lead to higher compliance rates?
Compliance for a 6 month course of just about anything is difficult and more so for something that may seem asymptomatic. Oozing sores, foul oders and overt discomfort would probably help, but alas...
Natural means nothing in this context. Effective medicine is effective medicine, and there is nothing that makes TB less prone to developing a resistance to a 'natural' effective medicine over any other effective medicine.
For the first portion of your reply, I think that if TB became resistant to potatoes with licorice icecream, it would be preferable to having absolutely no recourse with antibiotics. But that's silly. If you are 100% certain that latent TB is innocuous and can't be reactivated, I must admit my logic was flawed.
Edit: is not, eg mrsa, becoming resistant to various things in the environment? Biofilms make many bacteria resistant to even alcohol. Staph, ubiquitous and thus exposed to pretty much anything a person's skin is exposed to is probably resistant to many things it previously wasn't. But it remains vulnerable to a few antibiotics, for now.
Thus, you have a misconception about the nature of TB resistance. This accounts for the pushback. People tend to forget that we all have different knowledge bases and we talk past each other.