I feel that Ocaml could really use better VSCode integration more than literally anything else, but the community seems completely oriented around emacs
However, I (as maintainer of OCaml-eglot) find Emacs easier to extend (the VSCode extension is surprisingly complex when you stray from the beaten path), which seemed perfect for incubating an experimental feature. Furthermore, as mentioned at the end of the article, the feature can also be invoked from a code action, which makes it de facto callable from VSCode once the various PRs have been merged :)
Here significant work was done to properly bridge the gap between Merlin and the LSP server so it should work fine in VSCode.
Generally speaking, the Ocaml community seems to spend a lot of time getting VSCode to work.