So first of all, even at 1080p,
the benefit of a better CPU is minimal to the point of not even being noticeable in most games, and a ~5% benefit at that resolution certainly isn't worth spending the extra money for even in this generation, if for whatever reason you're still using 1080p.
But we can leave that aside, because... What chance is there that anyone springing for a new 7000 series GPU and its accompanying DDR5 ram along with a compatible new form of motherboard - at the prices those things command - is playing games at 1080p? Sure, there are a handful of competitive FPS gamers and streamers out there who are playing at 1080p/240-300mhz, but that's a pretty small niche, it seems like. The vast, vast majority of people who are interested in the new hotness are looking to game at 1440p minimum, and if you're buying this stuff you're even more likely to be targeting 4k.