[DeathArrow]

Yes, OOP kind of sucks. But you can use C++ without OOP if you so wish.

C# is much better but still it isn't a systems programming language due to garbage collection. So while you can solve some classes of problems easier and better, it can't replace all of C++ use cases.

[pjmlp]

That depends on the point of view.

Writing compilers, linkers, running bare metal on embedded hardware are all systems programming tasks.