I think you are spot on with that. The amount of training I received was very very minimal. My current company gave us one day training - most of that time was doing paperwork for the company. While I'm experienced(just over 4 years now), there were quite a few first time teachers.

As an ALT I have seen some pretty badly run English programs in the school(eg I turn up, and they have no idea what class they want me to assist with, or leaving me for hours without work to-do - I generally try and make worksheets, lesson plans or extra material for the students to read around the subject matter, but that very rare gets used at some places.

I have even been at a school where all the English teachers were on holiday, no one really spoke English in the school and had no classes for 4 hours. It can get a little depressing.

But other English programs are amazing, one of my current schools I have written at least 40 pages of material to assist the students/extra study(voluntary), and they have informed the students, who contacted me directly for copies of that work. (I wish I was at this schoolfull time!).