> Very much so once you compare it to how quickly C++ (and, in fact, any language that's ever been in the top 5 or so) achieved similar milestones.

No, this completely overestimates how quickly languages gain prominence.

C came out in 1972 and didn't gain its current dominance until approximately the release of the ANSI C spec in 1989/1990, after 17 years.

C++ came out in 1985 and didn't become the dominant language for gamedev until the late 90s (after it had its business-language-logic niche completely eaten by Java), after 14 years or so.

Python came out in 1991 and labored as an obscure Perl alternative until the mid-late 2000s, after about 16 years (we can carbon-date the moment of its popularity by looking at when https://xkcd.com/353/ was released).

Javascript came out in 1995 and was treated as a joke and/or afterthought in the broader programming discourse until Node.js came out in 2009, after 14 years.

Rust is currently 11 years old, and it's doing quite excellently for its age.