I’ve never created an account on Reddit, but in general, I’m surprised to hear they even allow editing older content. Most discussion-based/social media sites have logic that locks the comment after so much time (often some timespan less than 1 day), and only allow deletion after that point.

I would also be surprised if Reddit didn’t add such logic if they figure out this (editing older content to replace it with gibberish) is happening. It seems like reasonable logic to have in place anyway.

To be clear, I’m not siding with Reddit on this. Just saying it seems odd they even allow it in the first place, especially for comments — the top level post may make sense to allow edits, but even then there’s usually a publicly visible edit history.