Ok, 'massive' is subjective (and probably, rightly pointed out, incorrect).
But they did reduce the density of pedestrians - and removed their shadows - and reduced their update rate in the RT reflections. My larger point being that they didn't just knock the resolution down to 1080p-1440p and call it a day. They made cutbacks to reach that and not all games are going to have things like large groups of pedestrians that can be cut back/have their quality lowered to make up for the doubling of framerate. Like Control for instance. It's mostly empty corriders in an office block with shiny windows.
Like, I'm sure there are plenty of cutbacks that can be made (and probably have done, to be fair). But I worry we've been spoiled by how Miles got down to a very decent 60fps with raytracing and now fans expect that in every game. As seen by all the 'no 1080p 60fps RT mode?!' comments in here like it's the easiest thing in the world now.
Looking at it here, they've probably halved(?) the amount of pedestrians in the reflections and nothing has shadows. Not the people, the tree, the awnings on the doors and windows etc. They definitely did the work.