[eru]

> [...] and invented a new GC-only language (Go) as a replacement for (their uses of) Python.

That's not true. Go was invented with the intention of replacing C++ at Google. That didn't really work out, and in practice Go became more of a replacement of Python for some applications at Google.

Also there are some indications that Go didn't gain traction necessarily on the merits of the language itself, but more on the starpower of its authors within Google.

(I mostly agree with the rest of what you wrote.)