Since you seem to be logging edit history internally, how about making that visible to users? There would be a lot less confusion and paranoia around if it were obvious when an edit was made and by whom.
Alas, I think the odds are that there would be more, not less. Certainly there would be a lot more fodder for it. These things don't explain themselves, after all; we still have to do that, and it's a ton of work. It's also stressful—it's all public, and if you screw up in any way, you can easily generate more hostility and more work for yourself.
I think the current approach, in which we don't publish everything we do but are happy to answer specific questions when people ask them, is the right balance.
You could ask the mods why directly about the pig heart article, if you’re seriously interested, using the footer contact link. I wouldn’t do this for every edit and expect a reply, but it seems like asking them to chime in here for a single case study would be simpler and more factual than guessing at reasoning, and I imagine they’re probably willing.
https://news.ycombinator.com/item?id=29879165
but the mods did this one:
https://news.ycombinator.com/item?id=29879184
Peter's tool doesn't tend to pick up software edits because most of those happen on submission, which is before the tool picks them up.