As someone in a large, long-tailed codebase with multiple people working on it...it really hasn't been an issue. As long as people know the basics, and leave comments for anything weird they're doing, it's fine.
The only time I've gotten friction is when in another project someone was really eager about making everything as abstract and modern as possible, to the point the code was (in my eyes) nearly unreadable. But that's not a C++ problem, that's a dev problem.
