В книге The C++ Programming Language, 4th Edition, подчеркиваеться что Страуструп, никогда не говорил что язык C++ это ООП язык, цитирую

I wince when someone characterizes C++ exclusively through one of these styles (e.g., ‘‘C++ is
an object-oriented language’’) or uses a term (e.g., ‘‘hybrid’’ or ‘‘mixed paradigm’’) to imply that a
more restrictive language would be preferable. The former misses the fact that all the styles men-
tioned have contributed something significant to the synthesis; the latter denies the validity of the
synthesis. The styles mentioned are not distinct alternatives: each contributes techniques to a more
expressive and effective style of programming, and C++ provides direct language support for their
use in combination.

дальше можно не читать этот жирный троллинг.