Henry Asked Adventurer Entrepreneur to Teach TEFL English in Guatemala #tefl
Awesome video on so many points. However, teaching English is (or should be) a lot more than repeating phrases. That sounds like a variation of the audio lingual method which is quite out of fashion. I have taken a TEFL course and a CELTA course (same thing from Cambridge University) and can assure you that, hour per hour, they were as challenging as any university course I have taken. There are a wide variety of jobs available with differing requirements, some of which very challenging. And the work is as difficult and challenging as you like, depending on where you are teaching and whether you challenge yourself to do the work as creatively as possible.
Also, there are lots of purposes for learning English. My wife imports work shoes from China - in English. All of the universities here require English proficiency (at admittedly a fairly basic level). International trade works in English and 3/4 of all conversations in English in the world do not include a native speaker.