Experience of handling code written by all known consumers of H1B visas in US and other major sweat shops, across industries whose main business isn't selling software.

The real world isn't the pleasant CPPConf and C++Now session rooms, nor the quality standards that FAANG expect on their work processes.

The mess that is done will less complex languages takes another level when they also have touched C++ in the process.

Remember some Bjarne talks, on the real world many students still get introduced to C++ via Turbo C++ for MS-DOS.