

Hydrophobic coating loosely means a thin water proof coating on a material that otherwise isn’t waterproof.
Example: the previously mentioned popcorn bags are paper based but with a thin plastic based coating. (Historically we used to use wax for this kind of thing but in the modern day it’s almost always plastic)
Not that containers made of glass, ceramic, or metals that don’t corrode don’t need and typically don’t have hydrophobic coatings.
There is some truth to this
There is some truth to this too.
Making an MMO maintainable by the userbase might be complicated. But way more common are games that could easily have LAN based multiplayer but the company decides not to add it, or even singleplayer games that require an internet connection, just so the company can put limits on how and when the game is played.