Just because people might not have seen all content or the fight themselves, doesn't mean they're not allowed to post about it. Who are you to dictate what people should or should not post? No I have not killed or seen Sinestra myself (aside videos) but I am raidleading a 'casual' 10m raiding guild for 9 hours a week, and we're sitting on 7/13 heroic at the moment. The only reason I closely follow these type of situations is because it's good to be informed about future encounters.
You were the one implying 10m sinestra is fine the way it is, while statistics clearly say otherwise. I'm simply asking you to provide proof to back your claim, which you clearly are unable or unwilling to do, which means your stance on the fight being fine means exactly nothing.
Well at least you're coming with suggestions here, I like that. However I'm sure the people at blizzard are good at what they do, and they will find a way to balance it. Now, I don't know enough about the encounter to prove you wrong here, but from what I've read and heard around me I heard wrack will affect your entire raid at some point on 10, while this doesn't happen on 25m. Also the orb mechanic taking out a much larger percentage of your healing or dps on 10, compared to 25m. Again, from me it's only hearsay no personal experience so I can't validate these claims.
Now now, no need to become personal now, though I find it rather ironic you're calling me childish while you're resorting to personal insults. You're also contradicting yourself here. So nerfing encounters that are unkillable is alright, but when they're ridiculously overtuned (but if all the stars align, killable) it shouldn't be nerfed? I don't think this is Blizzards intention of how fights should work, so I'm 100 % sure they will come with a fix for sinestra 10. Not because 'it has taken too long so it should be nerfed now', no, because the fight is overtuned compared to 25m. And mainly because abilities were just copy/pasted to 10 without thought of how it would affect a smaller group compared to a big group.
But this is a mistake blizzard has made repeatedly in this tier, let's just hope they've learned from it and T12 will be a better balance between the two (and as such reducing the need for threads such as these.)