Well I guess the Go community is a little bit too passionate about any update regarding Go, even if the introduced new thing is subpar compare to other languages, like this one in the post.
This is not unique to Go: python's several debuggers require cooperation with the inspected process. This is exactly the opposite of a buggy situation. gdb's python support is very limited in terms of debugging capabilities, yet it's the only option you have if you're using an external event loop handler, such as gtk/qt/glib (not so uncommon). I guess I should be grateful I have those at least.