The students are the customers
As in all western countries, English is taught for profit in Thailand, and advertising of any product world-wide uses beauty and youth to promote products.
However, if you want an education in any subject, it is only logical to learn from an expert that has been doing said subject all of their life. One of my biggest pet peeves is the fact that English is presently being taught by so called, "teachers", that can not even use the language properly themselves. Of course one must recognise that this is due to the age old market determiner of supply and demand. As there are more English teaching positions in Thailand then qualified teachers, of course many institutions have no recourse but to employ substandard instructors. Students are customers and as such they demand quality products for their money. Is it really so surprising then that an employer would want to hire the most qualified candidates for any poisition?
Ajarnallo