It is not about being able to make static binaries or really anything that has to do with anything technical. It is more of a cultural thing - the culture in some languages is to link dependencies dynamically (C/C++) whereas the culture in others is to link dependencies statically (Go, not sure about Rust).

Personally i do not even write Go myself yet when i see some webapp made in Go i'm pretty much always sure that it'll be a self-contained static binary. Yes, there are probably exceptions (and i haven't surveyed all webapps made with Go) but it has been common enough to feel as the standard approach to me - and if i ever decide to make a binary webapp, i'll probably reach for Go to do it.