I agree, most of the points seem to apply more on C than on C++.

Also this:

    10. You will hardly be seen as a hacker if you don’t know C++

there are enough kernel hackers that are excellent C programmers, but don't know C++ that well.

and this:

    8. There will always (or, at least, for a very long time) be a niche for C++

There will also be a niche for COBOL programmers. That doesn't mean you should learn COBOL.

Just keep in mind that making a career out of maintaining other peoples' C++ legacy code is a highly optimized way to become the bitterest person in the world.