Exactly. The tech doesn’t matter. Tech only exists in service of the gameplay, and (introduced with HL1), the story (previous to HL1 the ‘story’ of most games was just a quick blurb on why there’s monsters and why you have to shoot them).
Gamers DGAF about new tech. Gamers wanted to be told a story. We LOVED the story.
Valve could’ve used the existing engine, built NOTHING AT ALL NEW, and just finished the story with existing assets and we’d all have been over the moon happy.