Sally,
It's a 2 panel cartoon. Google it if you haven't already.
The point of it isn't to discuss every single issue affecting education today. It's a 2 panel comic for crying out loud.
The point of it is to compare and contrast the different attitudes to teaching, in general, and the paradigm shift in the relationship between parents and teachers over the last couple of decades.
50 years ago, teachers were (hypothetically) respected professionals, and parents trusted us to make the right calls the vast majority of the time. Any time a parent marched into school angry, it was genuinely because a gross error had taken place. If it hadn't, they were given extremely short shrift.
Now, (hypothetically) parents are "customers" and the customer is always right. The teacher is afforded roughly the respect given to someone who works in PC World, and gets harangued about as frequently. Your value and worth are judged solely and entirely on your exam results and "Why didn't this one specific child achieve an A+?" rather than "Are your kids happy in their classes, psychologically healthy, is nobody being left behind, and are you broadly covering the curriculum set by the government?"
All the crap about inequality of outcome is important, sure, but completely irrelevant to a comic that is solely addressing the perceptual change over time about who, exactly, is responsible for a child being successful and whose fault it is when they fail. It's simplistic, sure. It doesn't address subtleties, sure. Maybe it's not even accurate, because rose tinted glasses are a thing. However it is, at the end of the day, just a comic.
I also think teaching needs to be made a lot more attractive to top students.
I disagree. The top students need to be going into higher education careers like research and development, cutting edge science/IT and university level projects.
What we need in schools at the secondary level are teachers with strong single subject knowledge and good group control skills, not someone who got a 1:1 and has never taught a class in their life.
At primary level we need responsible and empathic teachers with a good grasp of the basics across the board, and specialist training in safety and current thought on child development, again, not someone with a 1:1 who can't tell a child from a large monkey. The governments attitude of giving £20,000 to people with a 1:1, £18,000 for people with a 2:1, £15,000 for people with a 2:2 is beyond useless, almost as bad as their plan to put ex-military staff into schools to "instill discipline".
You don't need a degree to teach, except at A-Level or University. What you need is a level head, an understanding of the curriculum, a desire to help people achieve their best under difficult circumstances and the ability to deal with stress and abuse on a daily basis. Any of the above is more valuable than whether you got full marks for your thesis or not. People who function well in ivory towers do not always function at all in classes of 36 teenagers.