If you're nuking your old reddit content, this might be important. For me, the reddit history visible on the website was far less comprehensive than the API could access.
As a 10+ year redditor, I would sometimes go back through my profile and delete stale or irrelevant content. Deciding to try a faster approach this week, I installed Redact (available at redact dot dev, or on the Google Play store). It lets you bulk delete, or preview things first, which I wanted to do in case there was anything worth preserving.
When scanning posts/comments, it first says it's sorting by new, then hot, then controversial.
The "new" results were the same as I could see on my profile, but then the "hot" and "controversial" scans found page after page of comments that I couldn't see on my u/ page. There were 50 results per page, and I didn't keep an accurate count, but I removed at least 1000 comments, mostly from 2013-2018, via the API.
No idea how many people this could help, so it seemed like a worthwhile first post on kbin.