Holy crap. There's no nice way to say that, so I'll be very upfront... that thread is a huge pile of bullshit. Computers aren't truly random, but the "pseudo randomness" is only of relevance for large amounts of data (and no, looting 1000 legendaries is not a large amount of data).
Even if you play 10000 hours - what you experience will be true randomness. Here's a link to a thread that actually makes sense:
Please for the love of Diablo stop pretending that the "computers aren't truly random" lesson any programmer learns in his first semester has anything to do with Diablo un-randomness. It just makes it obvious that someone read up about "pseudo randomness" without understanding it.
Okay, this is going to be a multi-purpose thread to reduce clutter on the forums. Here you can do the following:
Complain about the game not dropping item X
Insane luck because you got 3 Shard of Hates in a row
Ask if Kadala drops item Y
Show off your insanely well rolled Thunderfury
Discuss whether or not the drop rate was stealth nerfed
Point out that the Mystic refuses to give you a socket on your weapon despite you asking her politely
State the obvious fact that Onyxia Deep Breaths more often since last patch
And all similar issues that come down to a simple thing: RNG.
I was going to add this to the FAQ, but since those threads pop up daily, it deserves its own thread. Here's a breakdown of information about current drop rates:
The drop rates have not been altered since the last patch 2.0.5.
Kadala might give you everything except for Bottomless potions, follower items, and cache-only legendaries.
Kadala might give you nothing ever.
There's always someone who gets every desired enchant on the first roll; to even out for this, you are the victim who will not get the desired enchant even after 100 re-rolls.
If you play for 500 hours and find 2000 legendaries, you will not get an average distribution of all the legendaries in the game; instead, you will see lucky streaks (for example, 3 Wand of Wohs in a row - feel free to post this here than so that I can hate you) or unlucky streaks (for example, never get a Wand of Woh - feel free to post this here so you can join my despair).
Important: If you see a thread that is an "RNG thread", post a link to THIS thread and leave. Do not engage in discussions. New threads that purely discuss RNG, even about a specific item or in a subforum (classes) will be locked. One thread is enough. Thanks.