Imitation is the sincerest form of flattery that mediocrity can pay to greatness...
Im guessing that pretty much sums up how you feel. "Why isn't my tool more popular" is really the subtext of your question here.
A lot of GO devs came from java,ruby,python,php ... For 3 out of 4 of those static typing is an upgrade. For all of them compile to executable is a massive change and a good one. We're not moving code and runtime to a box to execute...
Its a breath of fresh air that if I need a tool I can quickly write it in go, compile it, throw it on to the server its needed on and be done with it. I dont have to instal vm/runtime/server to make that code work.
Dont think that matters? I have a Rpi camera server that is just a go binary running... All I did was wget it and turn it into a service.
Furthermore every one who is coming from those languages has seen upgrades go all sorts of directions.. php 4-5-6-7 were somewhat smooth but evolved the language, there is a way. Python 2 v 3 you can evolve a language and there is a BAD way. Python venvs are a pain... and ruby gems have their issues... Go's no breaking promise and packaging choices speaks to all the things that these devs lived through.
And the laments of "go lacks" or "too much boiler plate" are features not defects. Write dead simple, easy to read code. Deal with your errors on the spot in a pattern that everyone will recognize. Im not sure that I qualify Erlang/Elixir easy to read or "simple" (effective I will give it).
So yes, people are stealing OTP... take the compliment and go out and invent something else cool that we can "borrow".