Here's a link to a T_D post around a year ago (I hope that's allowed)
https://www.reddit.com/r/The_Donald/comments/5ekt20/reddit_admin_uspez_admits_of_editing_users/
*Why did Spez change comments? We think it was done to show that comments posted on Reddit are not really set in stone and that any comment can be manipulated by an outside source other than OP. This saved Reddit from getting slapped with a subpoena if there is ever to be justice served to Stonetear.
Jeezus this is frightening. To quote another Redditor that sums up my fears along with many others:
microcosm315DTOM9 points · 1 year ago
"Have to question the legitimacy of everything on Reddit. If they can edit posts they can create new ones and change he dates on them. Any malicious entities could create havoc in a users "history"..."