kubectl-neat | Clean up Kubernetes yaml and json output to make | YAML Processing library

I have a json document of a Kubernetes Pod, here's an example: https://github.com/itaysk/kubectl-neat/blob/master/test/fixtures/pod-1-raw.json

I'd like to traverse spec.containers[i].volumeMounts and delete those volumeMount objects where the .name starts with "default-token-". Note that both containers and volumeMounts are arrays.

Using jq it took me 1 min to write this 1 line: try del(.spec.containers[].volumeMounts[] | select(.name | startswith("default-token-"))). I'm trying to rewrite this in Go.

While looking for a good json library I settled on gjson/sjson. Since sjson doesn't support array accessors (the # syntax), and gjson doesn't support getting the path of result, I looked for workarounds.
I've tried using Result.Index do delete the the result from the byte slice directly, and succeeded, but for the query I wrote (spec.containers.#.volumeMounts.#(name%\"default-token-*\")|0) the Index is always 0 (I tried different variations of it, same result).
So currently I have some code 25 line code that uses gjson to get spec.containers.#.volumeMounts and iterate it's way through the structure and eventually use sjson.Delete to delete. It works, but it feels way more complicated then I expected it to be.

Is there a better way to do this in Go? I'm willing to switch json library if needed.

EDIT: I would prefer to avoid using a typed schema because I may need to perform this on different types, for some I don't have the full schema.
(also removed some distracting details about my current implemetation)