I agree that using the mod log to attack other users with inaccurate mod action reasons is not really justifiable.
We now have some additional guidance about this here under the moderator responsibilities section:
Ensure that they only provide accurate and clear reasons for mod actions
I will make a separate announcement post about this as well shortly.
Unfortunately, due to the nature of mod log federation on Lemmy, it’s not really possible to retroactively change mod action reasons currently. I am sorry about that. If this does end up causing problems for you in the future, you could point people to this thread for context.