Tired of Reddit's recent shenanigans and want to cause them a little bit of pain? Well now, my friends... why not add "request all of the things" to your Reddit exodus?
The link to the appropriate page is here:
https://www.reddit.com/policies/privacy-policy#policy-h2-2
So, why might you want to request a copy of your data?
First, the collection they (eventually) send to you will contain your entire post / comment history, allowing you to (in theory) use that collection to remove all of your posts versus the last 1000 or so of each. There's no guarantee that Reddit won't restore those posts, of course, but at least you tried!
Second, you can scour the data for personally identifiable information (PII.) Your local laws may entitle you to removal of PII, so if you're inclined to purge the Reddit record of information that can identify your OMG real self... that dataset may help.
Third, you'll have a copy of your Reddit history. All those epic ideas will be in your hands, not theirs, safe to share elsewhere as you please. While you may not have the right to revoke the license you gave Reddit by posting there, you can most assuredly re-use your post as you please, wherever else you please.
Fourth, and lastly? If everyone submits data requests, Reddit's team has to spend the time (and money) to pull your data. it might be a small thing, but inundating Reddit with tens of thousands of data requests that they're legally obligated to provide is both wise (for you) and at least a little bit costly (for them.)
Addendum: If you want to make things a little harder (at risk of them not responding) you can use their privacy email versus their form. That way, someone likely has to verify that X request is tied to Y account.
Do you know what the format of the data they send is? Would be interesting to write a script to allow someone to recreate their content somewhere else if they were so inclined.
It's a zip file containing 32 .csv files that each contain a different type of data. poll votes, saved posts and comments, user preferences, comments, chat history, gilded posts, messages, and so forth. It seems likely that you could recreate whatever parts of your account that you wanted using it. Though the saved comments and posts are just the urls of those things, so if they're already deleted or private you'll have to go ask the datahoarders for the details.
or for anything past 2021 the wayback machine should have it, too.