Generalized rules for how to use C++ in all situations are aspirational and unlikely to be adopted widely. More practically, the large projects that rely on C+

Generalized rules for how to use C++ in all situations are aspirational and unlikely to be adopted widely. More practically, the large projects that rely on C++ should just have their own rule on what elements / styles are used in that particular project, and then use a linter to enforce those specific rules, and have good documentation that explains the rules.