This argument doesn't even make any sense.

Yes, that's right. It's as nonsensical as pretending the E.D.A.R. belong in the game.

You can hate them all you want, it doesn't change the fact that it adds new elements to the current playstyle.

As would magic.

You have freeze grenades. We have two official maps now that are set in space. They changed the trader to a robot that makes the guns out of thin air. We have DAR as a playable character. Now they just added gauntlets that EMPs Zeds on contact. The list goes on. Tell me how this isn't sci fi again?

Because it's still a horror-based shooter at its core. Science fiction elements does not mean that has changed. The original had a space level, the Z.E.D. gun, etc.