I rarely play anything from the past 5 years but when I do there's a noticeable difference in how the games are rendered compared to up until the early PS4 era. Transparent voluminous materials like hair or foliage have this fuzzy pixelated look to them, and there's a lot of rasterisation that looks like it's being rendered on the Sega Saturn. Then there's tons of odd shimmering going on everywhere, and I'm not sure if it's due to dynamic resolution scaling, ambient occlusion or dynamic reflections
Overall games don't look quite as sharp and defined as older games though they simultaneously have lots more detail. It's weird
As Beaver said Temporal Anti Aliasing causes that, because it uses buffered data from the previous frame to speed up anti-aliasing calculations in the next frame. Another pretty big culprit is DLSS, though. If you render at native resolution the game will look much sharper than if you render at 66% then upscale.