> ... because too many keep writing C in C++

I am sure for many of those people, they do this because they have decided that sufficiently understanding the complexities of C++ provides too little payout (or in some cases none at all) to make the shift worthwhile for them. I don't think accusing developers of "being stuck in the 90's" is the right way to convince them to work differently. If the technology is actually better, you should convince them of such by demonstrating it with many concrete examples.

Contrary to what many seem to believe, just because something is new doesn't mean it is better, even when computers are involved.