I feel proponents of any programming language put a lot of spin around what isolated aspects it is good for, but fail to illustrate what a programmer in even one target domain gains from using it.
Are there programming language implementations unlike what is described above, that you feel back up their marketing?
Of course. Its in the same category as Ruby and Lua. Hence the question on “getting out of the way”, which Lua is much better at and which Ruby surpasses by also making programming easier. But Python was first at surpassing even Perl at growing library bindings.
Yes. History and adoption matter.