There are only two types of C++ shops: the ones that use a rigorously-enforced subset of it, and the ones where the codebase is an impenetrable hornet's nest. You must decide on a subset of C++ to use or you'll go insane. Google made some opinionated choices and tradeoffs about which subset to use (as did Microsoft and every other company with a huge C++ codebase), and it's possible to disagree with the specific boundaries they chose, but the mere fact that they chose to do this is unimpeachable.