There are a lot of people in 2021 who - for whatever reason - feel like they need to program personal computers without using GC. As you point history shows that's a lot less true than people think, but nevertheless - that is the sentiment.
Dlang tries spends a lot of effort trying to attract these people, by making more and more of the stdlib nogc, having @nogc annotations, experimenting with deterministic manual memory management etc etc. But I feel like they'll never convert most of them.