Exactly. It reduced C to, almost, BASIC. Reduces available design patterns. Reduces available language features.
HOWEVER: having a MISRA-C LINT which is required to run on all code that makes it into an automobile is, ultimately, a good thing. Yes, the homogenization is ugly, but it does mean that classes of errors just can't occur.
The concept is great. There is also MISRA C++ of which I know almost nothing; is that any better?