I've had a PS5 for two years and gone one on black Friday, it's pretty remarkable how much of the current gen experience is intact for half the price. Posted an LTTP about it to varying response on gaf lol.
Gamers focus on Gflops as the only performance measure of a console too much. It's not even a performance measure actually, it's a paper calculation of shaders * 2 * clock speed, takes architecture into no account. But the CPUs and all SSD storage are certainly current gen. It's actually the controller that feels the least current gen compared to two years of Dualsense to me, but the Series X wouldn't even help with that, just resolution and some details and sometimes framerate.
It's going to increasingly pull away from the One X the more games use the much faster Zen 2 cores over its weak Jaguar cores and make games that assume all SSD storage, just looking at the Tflops and concluding it's going to be like the One X is simplistic and stupid. No reason to look at any One console anymore when the Series S is so cheap.