There's no amount of pain that's conserved. It's caused by the fact that people changed behavior that others were relying on, but that's a contingent feature of actual history.
I was reading a journal article yesterday about a separate unanticipated consequence of the coronavirus shutdowns that we may start to have trouble with weather prediction. Why? All those grounded airplanes doubled as automated airborne meteorological observation platforms to help provide the most accurate data possible. There are not enough drones with sufficient altitude rating to replace all those missing commercial air flights as to weather data capture.
I have to assume that's a misunderstanding of something I wrote?
I was saying that pain doesn't follow anything like physical conservation laws. If I fall down the stairs and break my leg, that's not a thing that had to happen to anyone.
Statistically, a lot of people will hurt themselves in similar accidents every year until the end of time, but if I don't live in a house with a staircase, no cosmic law makes someone else get hurt to compensate.