“apparently it’s a better safer C++, but I’m not going to switch because I can technically do all that stuff in C++”

The main difference between C++ and D was that (for most of the time in the past) D required a garbage collector.

So, D was a language with similar Algol-style syntax targeting a completely different niche from C++.

Trying to correct your quote, it should read something like "I’m not going to switch because I can't technically do all that stuff in D that I'm doing in C++" for it to make any sense.