Earlier quoted context omitted.
Then you don't know anything about C++, only the C legacy it is built on. Modern C++ has good data structures and good memory management. To be fair actually using those features of C++ instead of the C legacy is still catching on. Most instructors aren't even teaching it. Using C in C++ is like using unsafe everywhere in rust - you can do it, but you lose all the advantages.
This is a common viewpoint but also wrong. There's plenty of ways to invoke memory unsafety in 'modern' C++: iterator invalidation is probably the biggest source.
While you are technically correct, those who study C++ security note that those are a tiny minority of all security errors. Still an issue, but not nearly as common an issue as the ones that come from the C roots of C++.