Since I seem to be the main "culprit" this year, I'll chime in...
First, my apologies if I was a nuisance, this year.
I'm not great at stats, so I have to implicitly trust Daniel's expertise, here. (It's always hard for me to say no to someone who has the same 1st name as me, anyway.)
I think that when people see downvotes on many of their questions, it tends to discourage them from posting that quickly - most of the time. I think that in my case, there were a few days when I posted several questions, and some days, esp. almost when approaching Purim, when I posted none at all. Personally, I have no problem if a moderator steps in and requests me to stop. I also have no problem with the one per day disclaimer. I think that most people are willing to follow a policy that's pretty clearly stated esp. in a disclaimer. For the few that really don't obey the policy, you can always contact them, directly.
BTW, doesn't the system auto delete questions that have a huge negative vote number? In most cases, when I see a large negative number, I usually will delete the question, myself. Depends if I notice / remember and also I will read the comments to get a sense of why the negative votes are there. (Sometimes, but rarely, I strongly disagree, and will still leave the question there even with a low number.)
While I don't suggest that moderators close or delete a question that is lower than some number (say -5 or less), I have no problem if any of you want to do that with any of my questions, whether PTIJ or not. So, go ahead - consider me your "exception"!