Stucuk
Sep 8th is a guess, its not set in stone like that fake channel would have you believe.
Jighello
The channel just shows a tweet from Jeb that says it's a guess. They didn't say it was definite.
Stucuk
The channel does claim its the date on there channel page, there is no mention of it as a guess there. Which is why its a good idea to tell people that its a fake channel. Nothing on it can be trusted.
Hey, don't use fool as an insult! We Crazy-Fools are not Fools!and if people want to interpret differently then they're the fools that will be disappointed.
If you see a channel called MojangAB then you assume by default that its official given its the company name of Mojang AB(Until you realise its fake, or unless you know TeamMojang is the official one). From what i can tell calling something a fanbase doesn't mean its un-official by default(Mojang could start up there own "Fanbase" channel featuring fan's stuff if they wanted to).As for MojangAB, they don't claim to be an official channel but a fan-base. The only people who don't realise this come under the category above.
Jighello
"Minecraftblock0"
Unfortunately, you can't post a URL to a single twitter message, you have to post a link to the person's profile, and then make people search for the twitter post you were describing. Twitter has its fair share of usability quirks.
.....You just need to click on the bit that displays the time since it was posted(Bit that sais "16 minutes ago").
Stucuk