I don't think it needs to relate to any _specific_ development of the recent past, which I assume is what you're asking.
FWIW, the two notable world events were the deployment of French troops to the French Caledonian riots and the first successful Ukrainian attack on a Russian oil export facility. Were either of them indicative of a broader destabilization? Only time will tell.
Rollercoaster is a clear give away they're talking about future acceleration.
I'd bet it's an ode to the possible dystopia coming with technological acceleration a la AGI.
"someone at the front of the train begins to scream"
X-Risk / "doomers"? They're screaming first, but the rest will soon too.