I think we should go ahead and disable ocaml bindings by default now. With ocaml 5, and opam install ocamlfind ctypes, check-llvm-tools-bindings fails with many undefined symbol linker errors.
This is bad for these build bots which happen to install ocamlfind and ctypes.
Difficulty to find maintainers and reviewers is a sign of the small subcommunity. I don’t know whether this is sufficient to keep it enabled by default. Consider this: the Bazel build system have many users but it is in the peripheral layer and contributors have no obligation fixing them. That said, many contributors help maintain it, so the usability is actually quite good.