you dont even have to look at pre-release footage to realize that you've been lied to about the content of the game

look at this background in your steam library.
you see that giant robot right there?
it was also in some trailers too.
it doesnt god damn exist.

see these portal frames that are in-game? they were shown in the trailers too, being used to teleport to different planets.
they dont do anything, you can't interact with them AT ALL, despite there apparently being dialogue for it being activated. meaning the entire mechanic of the portals was removed entirely.
the game's lies can be really obvious to even the average consumer, and thats why people are pissed off. because hello games went back on atleast 50% of the content they promised with their game. Its pretty god damn significant when your game's marketing is 50% misleading and lies.