"C/C++" is not a choice, it's two very different choices.
Embedded systems also come in wide range of specifications and requirements -- from eight-bit chips where C is the only programming language available besides assembly to dual-core Intel Atom SBCs that can run general-purpose OSes and software.
I would say yes, most embedded jobs impose constraints best matched by C++: fully deterministic resource management and fastest possible performance, but C++ is not available on many embedded systems.