I used that a lot too. Much of it was hateful/rule-breaking content, but in the last few years, I saw a huge trend in innocuous content removed.
Like comments that did not break any rules but were heavily criticizing large name brands/organizations. There was a post about a year ago on r/askreddit about what leading brands actually have bad products, and about 50% of the comments were removed by the time the post was 24+ hours old… They were innocent answers with valid points.
That thread all but confirmed my suspicions of reddit catering to companies to scrub negative content from the site. I was on my way off reddit before this API stuff happened. Reddit has been treading sewage water for a long time.