Yes, thanks for that additional detail! Edits are visible to everyone by default in Discourse.
(Bear in mind that if you edit a post immediately after posting, it will not be considered an edit. There is a 5 minute editing grace period built in, to keep noise down – everyone makes silly typo mistakes after they post, so they don’t need to be immortalized forever!)
If you are the site owner, you can make edits visible to staff only in your site settings:
edit history visible to public
Allow everyone to see previous versions of an edited post. When disabled, only staff members can view.
However, what you’re describing is more about the editorial decision to delete something instead of editing it. Rather than worrying about a hypothetical problem, I’d wait and see if it’s a problem in practice, first. 