You know how at the end of Half Life 2 the G-Man says, "This is where I get off" and walks out an invisible door made from blinding light? That was meant to echo the end of the first game, which also ended in a train. That line doesn't work the same when you're fading away into nothingness for no reason after having quoted yourself twice for no reason.
Its such a stuffty way to remind people of the actual HL games without any of the nuance. It's such garbage.