I would add a little to bjkmom’s point. In my experience, there are teachers (more often professors) who really know their own specialty, but have no idea how to actually transfer that information to someone who may not have the same drive and/or passion for the topic as does the instructor. The problem is exacerbated in college as professors often have little or no training in actual teaching.
Another aspect in which new teachers are not much different than new workers at any other job…they have a distorted view of actual work. There is a reason they call it work. It can be hard. Some are lucky enough to do something they love as a job and that helps, Many young people starting out jobs expect to put in short hours for high pay and little or no conflict from peers, superiors or subordinates. Some things just need to be learned the hard way, I guess.
As for the article…mostly a waste of pixels. Poor use of statistics to opine on a topic. Like any profession, teaching can be hard. Many are often under-appreciated and office politics (not to mention actual politics) often torpedo promising careers. To some, the solution is simply to pay more money. Sounds great, but the law of unintended consequences just ends up filling classrooms with more ‘teachers’ looking for the paycheck and nice vacation schedule than those will a genuine talent and love for teaching.