This:
> don't try to resolve any merge conflicts ... Don't try to "help". Don't fuck with the index or the worktree.
... certainly is "nothing" in the literal sense--that that's what is desired of git-merge to do, but it's not "nothing" in the sense that you're saying.
git reset --hard has nothing to do with merging. Nothing. They're not even in the same class of operations. It's absolutely irrelevant to this use case. And saying so isn't "not an argument" or not communicating anything at all. git reset --hard does not in any sense effect a merge. What more needs to be (or can be) said?
If you want someone to help explain something to you, it's up to you to give them an anchor point that they can use to bridge the gap in understanding. As it stands, it's you who's given nothing at all, so one can only repeat what has already been described--
A resolution strategy for merge conflicts that involves doing nothing: nothing to the files in the current directory, staging nothing to be committed, and in fact not even bothering to check for conflicts in the first place. Just notate that it's going to be a merge between two parents X and Y, and wait for the human so they have an opportunity to resolve the conflicts by hand (if they haven't already), for them to add the changes to the staging area, and for them to issue the git-commit command that completes the merge between X and Y. What's unclear about this?