I have a hard time agreeing with this. In my experience people's single most interesting thing to talk about is themselves. Once you notice that, you see it everywhere. It's such a lure, it's almost irresistible. I've made it a habit to ask them a couple of open questions and then just let them have at it. In a few situations folks lost business with me simply because they were too preoccupied with talking about themselves to simply ask "so... how about you? what do you do?"
It follows that whenever someone has an obsession, it comes up naturally while they talk about themselves.
There's plenty you can do with D but not C++, see regex, bitfields, swap member-by-member with checks for mutual pointers, the pegged library for grammars, etc etc.
Neither Rust nor Scala hold a candle to D in terms of compile-time introspection. You can do things with it that are near unbelievable - "you must ask yourself if some law of nature was broken" quoted from memory in http://dconf.org/2015/talks/alexandrescu.html
Nor does what I said imply your assertion.