They said that they use it for metrics, so clearly there must be an "elon impression" metric.

I imagine it's the largest metric in a mission control style room

it starts dropping, klaxons start blaring, the room drops to red only lighting, engineers on the floor start pulling out their hair knowing the shitstorm that's coming

Yes, it’s not making anyone see any extra Elon tweets as your comment alleged.

It means they won't ship features that hurt Elon's reach. So in a sense, it is biasing code changes in favour of Elon.

Why does it mean that?