Yes, a Reddit user can, with the help of certain browser extensions or websites, read deleted posts or comments. Choose one of the following:
Unddit: This software is a successor to Removeddit. Content is retrieved from Pushshift.io. It shows user-, mod-, and bot-deleted comments. Deleted Reddit comments from users appear in a blue box, while others appear in a red box.
Reveddit: This tool only displays content that’s been deleted by mods and bots. Reveddit also offers a browser extension called “Reveddit Real-Time” that notifies you when your content is removed.
Wayback Machine: This simple tool saves copies of web pages. You can also use it to view deleted Reddit comments and posts. However, they have to be long enough for the Wayback Machine to go to the trouble of archiving them.
Resavr: You should really only ever use this option if you’ve exhausted all others. You can use it to view deleted Reddit comments but not posts. If you’re casually browsing for comments, it has a useful “Recent Comments” section.