FT2, per your earlier comments, there is much here to discuss. However, since you mentioned a lack of appreciable interaction between us, I believe I first heard of you when you showed up out of nowhere - presumably solicited from IRC - and, without warning, blocked me for a week for attempting to warn contributors that if they use their real name, they are likely to be attacked under that name on Wikipedia. Perhaps just another routine meatpuppet/adminpuppet block for you, but it made an impression on me. The second interaction between us was your and JzG's deletion of my very detailed and accurate sockpuppet reports (Oldwindybear, Orderinchaos, the first resigned, the second still an administrator) and subsequent indefinite block of my account - immediately overturned, but leaving a very false charge of "harassment" in my account history.
This seems to be a big one for you. For me, it was something I had no stake in, nor a big deal. It was a routine admin action as you say. You were not just "warning people" as your post suggests, though. if you want to look at the case though, for anyone else this is the link.
Uninvolved administrators routinely get asked to look at difficult or contested matters. I was asked in your case for two reasons - I have no prior "history" and had never heard of your name, and, it was a delicate situation and I tend to be very careful to review those for myself and not assume. My full post is linked above.
Reviewing your edit from almost a year later, I would probably say that it was trying to make a point disruptively, and also, that underneath there was something valid to it. In other words, it is worth saying, "we can't guarantee stuff wont happen thats bad". But you were making edits that together, were disruptive on that general theme, rather than collaborative, and you had a specific sanction because of past disruptive actions, to the effect of "don't do it any more". You know well that introducing a "well by this standard I think wikipedia is X" into a policy page is at best, [[WP:POINT]], and at worst plain disruptive and poor judgement. Whether or not it is factually so, the edit was uunhelpful and that is what I reviewed for. You may want to help newcomers, but not by making disruptive "POINTy" edits. My regrets on the block notice were genuine, if that means anything, but the assessment was neutral and would have been the same for anybody else who made edits of that kind when they knew better and under sanction. That's why you were blocked. I'm sorry it's taken nearly a year for you to feel able to ask more, but I'm glad you have, and if this doesn't satisfy then at least maybe it says "it wasn't malicious".
The page deletions are much easier. I was asked to look at those, and indeed we do have a policy on them. My post to you is here. You'll see this was a case where in July/August 2007 you prepared evidence pages for cases, but they weren't used as at April 2008. We have a standing norm that userspace pages like this are aimed for imminent use, you weren't editing or showing any signs of using them, and they were so old as to be doubtful if the events they showed would have been evidence for any current matter. Even so you'll see I didn't delete them. I blanked them - that is, added a "blank revision" which you could easily undo via history to get the version you edited, if you ever needed it. I also explained it on your talk page (slightly wrongly as you didn't need help to get your text back). Again, I'd have done the same for any very old "evidence page" I was asked about in anyone's userspace, including my own. It wasn't personal, and didn't delete it if ever needed again. But keeping it hanging there endlessly, for no reason, with no likely usage - not a good use of userspace.
Hope that helps clear it up a bit, if not completely reassures.