Some of the worst code (codebases) you will see is C++ code written by people who are new to the language and think that it is the right thing to do, or just cool, to use every feature of the language.

C++ is a massive language, that has really grown too big, and is fraying at the edges. This is probably the fate of any old language - it either keeps growing adding more modern features, or it stops growing and becomes obsolete. It's hard to always add new features while retaining backwards compatibility, but backwards compatibility is what users demand, so the result is languages like C++ that are screaming for the feature set to be refactored and simplified...

Using C++ well is requires knowing when it's appropriate, or not appropriate, to use the features it provides!