In our app, I noticed a lot of unnecessary usage of the mentioned methods when we can just rewrite the hash definition (or the hash is already having the right format, so method call is not needed).

# bad
SomeJob.perform_async({ foo: 1, bar: 2 }.stringify_keys)

# good
SomeJob.perform_async({ "foo" => 1, "bar" => 2 })

I was also able to find a few offences in OSS projects, for example gitlab.

1 offense for symbolize_keys https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/instrumentation/redis_payload.rb#L22-29

and 54 offenses for stringify_keyslike https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/models/lfs_download_object.rb#L23-28