We spent SPM-911 and SPM-912 deprecating and removing all network ops that weren't OP_MSG. SERVER-78258 as part of SPM-1452 introduced OP_BULKWRITE, which seems to be only mentioned as a footnote in the project's technical design. Additionally, the code review didn't seem to have any (then) Service Arch interviewers.

This ticket is to investigate if SPM-1452 is doing anything necessary in the networking layer by adding OP_BULKWRITE (hopefully not) and to remove it as a network op if not.

I'm not so bold as to automatically make this 8.0 required, but it'd be nice not to release with a new network op after we'd spent a good amount of time whittling down back to just one.