Isnt that a school site singing the song of praise for that "company"? If so, it is quite unlikely that real authentic and truthful information is given there. So, to me looking at this site and reading the info given there is a waste of time to me!

It is the company's website, that's correct. But wouldn't you agree that the four foreign teachers have posted the truth regarding their personal feelings about teaching and living there?
Perhaps more importantly, foreigners seeking teaching jobs can get a fair idea of the English levels of those four practising teachers by reading their submissions. After having done so, many a non-native speaker having poor English can probably apply with confidence for a teaching position there.