Comment by grok22

Seriously, the competing library problem is stale news. It might've contributed to things stalling a long time back, but I think the main reason right now perhaps is due to no mainstream FOSS software that is used by a large population being written in D. Nowadays, there are too many alternate choices in capable languages with more backing and some of them have more mind-share like Go and Rust and Zig. Mostly Rust perhaps. And C++ is catching up. D doesn't really have a niche where it might be a good language to use.