Why is D unpopular?

[Tejas]

On Friday, 29 April 2022 at 01:33:36 UTC, Walter Bright wrote:
> On 11/2/2021 11:48 AM, Paulo Pinto wrote:
>> Then on the PC and Mac it quickly got the love from Apple 
>> (replacing Object Pascal with C++), IBM, Microsoft, Borland, 
>> Watcom,  SGI, Sun, HP, among others, and naturally Digital 
>> Mars/Symantec as well.
>
> Um, Zortech C++ was the first native C++ compiler on DOS in 
> 1987. (The existing ones were all cfront based, and were 
> terribly slow.) ZTC++ produced the first boom in use of C++, 
> accounting for perhaps 90% of C++ use.
>
> This popularity lead to Borland dumping their own OOP C and 
> going with C++, which then led to Microsoft getting on the 
> bandwagon.
>
> This popularity then fed back into the Unix systems.
>
> No, you won't find this account in the D&E of C++ histories, 
> but it's what actually happened.

What is D&E? Internet suggests "Design & Engineering"
Is that it?