Edit: you two are fast
When I started typing this, Eazy's post was the last one in this thread.
"End of All Things" is what he was talking about, though, not the scythe phase. If you just ignore EoAT and let him finish casting it, look around before the encounter ends: all of us will die, but the Titans will still be around, the Seat of the Pantheon will still be around, Azeroth and Sargeras' cloud (presumably even Sargeras himself) will still be around. That might show that the spell either isn't as destructive as the characters hyped it up, or has a very limited range - either way, it didn't seem like EoAT actually end everything at all. You can check it in game, or have a look at
this clip.
Personally, I'm skeptical about the whole thing. We are essentially discussing about a game-mechanic based on in-game characters' opinions (which is subjected to being wrong), so in-game stuffs need to be taken into account. However, how far should it go? Which in-game things should we take to be canon? One, like @
cparle87, may claim that the Titans, Azeroth and everything that would still be existing before the encounter ends is the proof the spell isn't literally the end of all things. Another may say that it was just Blizzard forgot or being too lazy to create an entire new skybox for ~3s of an encounter. Then again, one may say that if Blizzard wanted to portray EoAT to be as deadly as it was, they could always go with the Cataclysm way - having everything fade into black, implying that there isn't anything left for us. I don't think it'll be easy for people to reach a conclusion that way, if we will ever reach one at all without any input from sources outside of in-game mechanics (i.e: novels, interviews, etc.).
Game-mechanic asides, lore-wise, I do think it seems a bit illogical for EoAT to be able to destroy everything in the universe. Sure, maybe it doesn't use raw destructive power (since none of the Titans, including Sargeras, has shown capability anywhere near that level), but some other mechanics (i.e: affecting reality's integrity like the Scepter of Sargeras, or drain the life of everything affected) instead. However, would Sargeras really want to keep something that can kill him or Azeroth at any moment around? Or leave him unattended after helping him to wake up? That doesn't sound right, so I assume that EoAT can kill everything, but it either isn't absolute (can be resisted / countered if the affected targets are powerful enough, for example - which would make sense going by how WoW abilities work lore-wise) or has a rather limited range. I can very well be wrong, though.