I`ll agree with you, but only to a point. If your only motivation for instructing is to get hours quickly and move on, then you are not being a good instructor to your students. If, however, you grow on the experience of teaching someone something they have never tried before, and succeed at doing so, then you will in one or several ways grow as an experienced pilot. Yes, you can learn a lot by studying the books and manuals, but theory must be put into practice to get the most out of it.
So let`s say you get your CFI/CFII with about 250 hours total time. You get a job instructing and do your time up to at least 1500 hours. Meaning, unless you`re a very nervous person who never goes far from the pattern or training area, you should have learned and experienced a lot. One of those things is how to interact with a fellow pilot in a cockpit.
If you`re not willing to do your time and go through the ranks in the first place, then flying (other than private) is not for you. It`s not glamourous. It takes a lot of time and patience to make it. Need some luck and to know some people. The hours are terrible. The pay is questionable, at best. Most likely there will be a bit of commuting to say the least. No social life except maybe at nightstops. Have friends at home? They won`t bother calling you after awhile because you`re either away, or trying to get some sleep in a desperate attempt to regain something that appears to be consciousness. Girlfriend? Not for long. Kids? Maybe see them every other xmas, or at graduation. Living out of a suitcase, waking up at a different hotel every morning not really knowing where you are without looking at the hotel info. And for all this, you probably will have to get another job to makes ends meet because you still have bills and loans to pay, while the flying public demand ever cheaper airfare.
But perhaps, this new legislation might bring and end to your needing another job.