Earlier quoted context omitted.
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That our education system wasn't resilient to that well-funded propaganda machine is what reflects poorly on it. That such a machine is allowed to exist reflects poorly on our institutions more broadly. I'll never blame human greed. Systems are designed for humans, if they fail to account for human nature then they're bad systems. I'm not really interested in litigating whether humans as a species are bad.
Fun little exercice: How is education funded (not just school, the rest as well) ? What does the salary scale look like ? Would you jump into that boat if had the qualifications ? (and probably: why haven't you jumped into it until now ?)
Once you've got through all of that, how resilient do you expect the system to be ?