Not the person you're replying to (looks like they got banned for what they said in this thread) but I fit the same bill, being someone who hasn't posted there while still thinking rule 8 is just a bad rule that doesn't improve the site but detracts from it. I like to read the things posted in the dunk tank, including posts that I have seen removed for rule 8. I also like to read the modlog and it's the only reason I know about some threads that got removed, threads with lots of comments, none of which were complaining about the source of the dunk, and that I really enjoyed reading and would have liked to have seen continued to be discussed.
In addition to threads I only knew about because of the modlog, there have been a bunch of times now where I was reading a dunk_tank thread and went to respond but couldn't because the post got removed between the time I opened it, read through it, and tried to comment. There have also been a couple times where I was considering making an actual post there but didn't because I didn't want one of the only times that I do make a post to end up getting removed. There was even a time when someone else (a mod at that!) ended up posting the very thing I had been considering posting.
If I remember correctly, when this issue has come up before, which it has several times, mods said that no comm requests for rule 8 posts would be granted. I even suggested a weekly megathread where people could post and talk about all the low-hanging fruit they wanted, but it would be contained to a single, easily-ignored if chosen, thread. But no one seemed to like that idea.