I don't disagree with any of that.
However, keep in mind that if the removal of the information that should remain is part of the same edit that adds or modifies other information in the article, simply hitting the "revert" button is committing the same offense, and is no more excusable.
It would be better to bring the initial offending edit to the attention of an admin to handle rather than putting yourself on the radar for the same offense.
Last time I tried to have a discussion about it, but the editor in question didn't partake in the discussion, and a Sysop, you, simply defended him and never acknowledged the problem. So, last time, I had to take a scapel to someone's wholesale deletion of blocks to text and recover them from the edit history.
I want this as a stated policy so that a Sysop will indeed side with 'don't delete it' side of the discussion and the offending editor will know that they are the one that needs to go back and edit correctly rather than someone else having to fix it.
With a policy in place, then it will matter not who did what when. Instead, we just follow the policy.