It's a well known fact that most of the GLV "teachers" have no education whatsoever but they are good at "entertaining" students.

Allow me to add that most FTs in China are 'entertainers'. The crappy education system here has been set up by the powers-that-be to pander to the opinions of students, most of whom are unqualfied to judge their teachers! It's also worth noting that almost all Chinese teachers of English speak and write Chinglish. They do not wish to be part of an excellent education system as they would be found out and fired in that kind of environment. Entertainers are what China has prioritised as a direct consequence of empowering its learners. Even the middle school English textbooks, mandatory, by the way, are useless learning tools for the vast majority of the students. No wonder so many Chinese learners of English have very low levels of English.

Quality teachers do not stick around as they move on to greener pastures.

Quality teachers or not, who cares? The most important thing is to do as local teachers do, keep your head down, do as little as possible,enjoy yourself at the blackboard, and pick up your monthly pay checks. Such easy money for wily westerners is on offer, grab the oppportunities and enjoy spending your so easily earned cash. Cheers!