Ungivable games available for 0P and no CV

But you seem to missed my point. I said "proof" when "they don't mention SG"
Anyways you're correct about applying that rule to members here which are harassing other users on Steam. But keep in mind some particular cases:
Reports can only be valid also if there is enough valid proof...let me show you a couple of examples....screenshots are not very reliable, in fact they are declined lately by many platforms, MMOs, sites, etc, as since it's actually very easy for a semi-pro image/design user to edit and fake them (and believe me, I have seen this kind of "proof" when I was a GM on a MMO...you would think you will notice the edition, even on 1920x1200 SSs...thanks God we had the chat logs for corroborating that n.n) Also, it would be extremely easy to fake an ID of an user and say "Hey, look over there, John Doe from Steam is on Twitter begging me!"...and such John Doe have a Twitter account with other name or doesn't even have an account on Twitter...add it Skype, any type of chat beyond Steam one, etc if you wish to the list
Personally I think that rule is just there as a way to try to want and stop ppl from doing stupid things, but otherwise, it's hard to apply beyond the "walls" of SG...unless there is undeniable proof like a direct comment on another profile with your account, and in a public profile too (conditions which are hard to meet sometimes) Other methods can and are probably faked (I also already saw a lot of "tries" over Steam to ban a user making similar fakes accounts, like if Steam support members are idiots or what...they have all kind of logs at their disposal...or the fake trading bots alleging they are from raffles groups, and scamming "nicely" unaware users) And yes, the point is, SG can don't allow an user to use their site, but with which use unless there is 100% proof? Otherwise the same "hate wars" spread all along Steam with members wanting to ban other members (some so kindly to think they can "VAC report players", hahaha n.n) would occur here, one way or another
And indeed, it's not support's job to go on a manual check about the topic (otherwise they would go nuts with all the traffic and just over Steam), and just attend tickets about complains, but again, if someone is a jerk/troll enough to report anyone on Steam or whatever begging for keys, and not with solid reason or under a serious harassment, I think that user would get blocked instead...just for bothering the mods...otherwise I repeat, half Steam members at least should been already banned from access SG, in case they even have an account here

TL;DR: Didn't wanted to cause "commotion" with these two posts, just wandering how it actually applies, and my best guest it's just as I stated above + what MysticAarrgg said (just in case of 100% undeniable proof, of course)