The tree-sitter ecosystem continues to expand thanks in large part to neovim's enthusiastic adoption. It's a shame Atom was sunset in favor of VS-code - having spawned both Electron and Tree-sitter, I think it's clear which was more visionary.
VS Code brought Language Server Protocol, so I don't think the "vision" balance is as one-sided as you imply.
And the debug adapter protocol IIRC.
It continues to expand because there's nothing else like it: a language and editor agnostic tool for implementing parsers for IDEs. All of the editors come up with all kinds of niche hacks and DSLs. All editors keep reimplementing broken, partial, regexp soups..
I can only see more editors just giving up on this and going all in of treesitter.
It's not only neovim, btw, the next emacs is also gonna have it included.