There might be a good reason for this. Raster effects were already really good in newer games, and ray tracing could only improve on that high bar. It’s filling in details that are barely noticeable, but creap ever so slightly closer to photorealism.
Old games start from a low bar, so ray tracing has dramatic improvement.
I expect it to change with the next gen consoles at best ( ps6, xbox whatewer tf ). Beacuse with them we might finally be able to see the games that just straight up abandon traditional rasterization and go full ray tracing only ( also the last strugglers on pc will probably finally abandon gpus without raytracing support by that time, pepole tend to complain on consoles for ‘slowing down progress’ but dont see the absolutely ancient devices most or to be precise significant minority of gamers use ). For now even with ps5 pro they still need to create ps5 version.