Unless you care about ray tracing. I still remember that Digital Foundry video you posted where they showed that the CPU matters when it comes to the RT performance on some resolutions.
Then again, I doubt someone that buys a 3090 or the future 4090 will go and skimp on the processor.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.