> A ping goes around the whole world before your pressed key is visible on the screen.

I don't disagree with your sentiment, but as someone who manages infrastructure which is literally on the opposite side of the planet (from me) RTT is long enough to be objectively horrible for anything interactive like typing over SSH. At least 250ms capital to capital for Europe to Oceania + last mile latency makes 300ms a more realistic minimum + actual processing time + client side rendering and it really starts to feel like a half second from the full human perspective... Under ideal conditions.