No, they're mad because the developers have a really bad habit of speaking in generalizations that they know will make the fans assume a bunch of shit and then claim it was all their fault later when it turns out none of that exists or works like they heavily insinuated.

"Yeah you can walk around a whole planet!"

If you don't mind walking back to your ship so you can fly to the next chunk of the planet since there's seemingly no mechanic to "call in" your ship and the terrain will eventually block you with invisible walls.

It's not the lack of features, it's the developers willing to let the players invent things in their heads until release day when it inevitably comes crashing down.