I have been cited in a 184-page RAND paper on racially motivated violent extremism for dunking on ruqqoids

Aren't you a cutie!

because of how 4chan's boards work they slide other threads off the top and straight to being deleted

It's based off "forum sliding", a very old copypasta about COINTELPRO techniques:

If a very sensitive posting of a critical nature has been posted on a forum - it can be quickly removed from public view by 'forum sliding.' In this technique a number of unrelated posts are quietly prepositioned on the forum and allowed to 'age.' Each of these misdirectional forum postings can then be called upon at will to trigger a 'forum slide.' The second requirement is that several fake accounts exist, which can be called upon, to ensure that this technique is not exposed to the public. To trigger a 'forum slide' and 'flush' the critical post out of public view it is simply a matter of logging into each account both real and fake and then 'replying' to prepositined postings with a simple 1 or 2 line comment. This brings the unrelated postings to the top of the forum list, and the critical posting 'slides' down the front page, and quickly out of public view. Although it is difficult or impossible to censor the posting it is now lost in a sea of unrelated and unuseful postings. By this means it becomes effective to keep the readers of the forum reading unrelated and non-issue items.

With imageboards, there's a limit on how many threads can be shown at a time. You can bump, or slide, the least active thread off by posting a new thread. So, in the case of /pol/tard world, if someone is trolling posting a bunch of 'slide threads', they're trying to keep (((YOU))) from finding out the truth from the Real True Thread.