In the sense that OOP is often used in very stupid ways (dunno about C++ but in other languages, have a look at PHPUnit it is the best example of misunderstood OOP) I can understand C programmers. Golang is also very simple for a reason
I agree, but moreover: You can also do nice OOP with C.
Take a look, for example, to COS (C Object System) which implements OOP on top of your C compiler. The object system itself is inspired by CLOS (Common Lisp Object System) and Objective-C (in turn inspired by Smalltalk). It also allows 'automatic' allocation by reference counting.