There is a response on the bottom of this article.
Debate is always encouraged.
Teaching in general, and ESL in particular, is simply not a profession in the sense that the law and medicine and engineering are. If you want to teach ESL in the US, you better have a spouse that's got a good income, or you're going to go hungry. The bottom line on all this is that if one thinks one is entering a legitimate profession by studying in order to teach ESL, well, one is daydreaming. Most people I know in the US teaching ESL are running around teaching part-time at 3 or 4 community colleges or the like barely making ends meet by the time wear and tear on their cars and gas expenses are accounted for. No degree or advanced training or intensive course study is going to change that.