Board Owner, I have been keeping loose track of the number of posts made each bread by EBot\Tacobot and several other users that spam heavily in each bread (including users who re-post the same 5-10 images every single bread, day and night, like clockwork) and they are now using up anywhere from 150-300 posts per bread. That is 20-40% of each bread.
Freedom of speech is one thing, but in its name we are allowing slide factories to operate here openly 24 hours a day. During prime time hours, it's not possible to scroll to the bottom of a bread before it fills up, even after filtering these users (because their posts obviously still contribute to the post cap even if they are filtered). A lot of normal (I think) users also cannot seem to stop replying to them, which typically mushrooms the number of posts wasted by 20-30%.
They are successfully preventing anons from seeing and responding to many valuable posts, each and every bread. Why do you not do anything about this? It's spam on a level that would not be tolerated anywhere else on the internet, including 4chan.