I was thinking that this could be the way to truly kill a sub. Let it descend to the noise, the chaos, the spam, and the hatred. Maybe do the least bit to stem claims that it's unmoderated.
If people are interested in devaluing Reddit, it seems like a good place to start
The average user won't know what's happening, they'll just think "Wow, what's with all this spam, mods need to do their jobs."
What needs to happen is people migrate from Reddit to alternatives like Lemmy, or at the very least, the Reddit admins think enough people are going to leave Reddit. Filling your sub with spam won't make people switch to Lemmy, they'll just go to one of the remaining subs that's still being moderated.