"0) C is not difficult, it’s the opposite of that —that is what makes it a very good choice, possibly the best choice, for low level system programming"
Yet engineering managers at Amazon, Google, and Microsoft managing groups of engineers a hell of a lot more talented than random commenter on the internet, have all decided the benefits to switching to a better language are worth it for many projects. Go argue on their blog posts how dumb they are to move away from languages that enable several classes of bugs.
If C, C++, and Rust had been introduced at the same time, do you really think any programming would be done in languages other than Rust because they're "not difficult" to write secure code in?
Biting the hand that feeds IT
