I think the post resented being the profession being marganilized. Tv commercials show teachers as being like mothers on steroids. I can think of one headache commercial in particular. They don't want to be called mothers, they want to be called employed workers.
The link inside the blog pointed out another problem teachers have. They have to take underachieving students from a culture that doesn't value education and work on getting their "buy in" to even be willing to be educated. Imagine that, condescending yourself to accept an education! How low will you go?! And who are the teachers told to focus on? The one that doesn't want the education.

Youth lives by personality, age lives by calculation. -- Aristotle on a calendar