I on the contrary, I rather reach out to C++, even though I like D, it isn't the features, it is the ecosystem.
Otherwise I rather stay in JVM/CLR/V8 land, when I don't need to.
I have been around D since Andrei Alexandrescu's book was published, even he is now back in C++ at NVidia, as his main work after he kind of stepped away from his role in D development.
And he is one of the figures on C++26 reflection papers.
Oh C++ has the clear advantage in libraries available, for sure. That's not really due to the languages themselves though I'd say. I'm honestly not quite sure why C++ got widely adopted and D did not.