So, how is this different from getting spoilers from datamined information on sites like Wowhead? Or from people who play the alpha and beta?
Things like secret mounts/pets/treasures and puzzles are usually solved and figured out way before an xpac launch due to alpha/beta players doing them during test play.
And cinematics like the one that plays close to the beginning of TWW are datamined and spoiled way before the xpac even launches.
Like, literally all the spoilers you’re talking about existed before Early Access ever went live lol