[lucideer]

I've been writing JS for 17 (continuous) years I'd say it took me at the very least 6, probably much closer to 10, to get to what I'd call "expert" JS knowledge (and have since regressed somewhat).

I've been using other languages longer than 10 years too but not continuously enough to ever consider myself expert.

I'd say there are definitely rust experts out there, but I'd posit it's unlikely for the average dev to have gotten that far yet.