Its not the CPU that is the issue anyway. Its the memory both size and bandwidth. Microsoft addressed the size somewhat by making some more RAM available but that doesn't address the bandwidth. The issue is developers are hitting limits in shifting assets around as compared to the X. Its why you see significant texture differences and skipped RT in titles.
I don't have a crystal ball for how it will play out in the second half of the generation but you would have to think it is more likely to become a bigger issue than not. Its also imho another reason why there won't be a Pro series console. More likely they sunset the generation faster instead and just go with a whole new generation that trumps the PS5 pro. Because at least they know that the existence of a PS5 pro extends out the Sony generation enough to give them a window to do this. Or, and this would be a massive shame, this is the last Xbox hardware generation. I don't think its likely but maybe enough generations of trailing marketshare means the bean counters give up on that aspect of it.