Clarification Thread - What is going on?

So recently 3 persons just dropped a bomb into the 3DS scene, and so a lot of stupid things have been understood. This thread is made to clarify things and destroy the bullshit.

• First of all, and most importantly: DO NOT UPDATE WHATEVER FIRMWARE YOU'RE ON. Thanks. It is recommended for you to get a way to access Homebrew Launcher as soon as possible.
  
  
• snshax is indeed a way to downgrade without NAND backup (and install legit CIAs) for firmware under 10.2 as it...

Clarification Thread - What is going on?