It doesn't matter what most people do. I fully acknowledge that out of the box the 14900 is stupidly setup, to the point of it being almost unusable. But that doesn't say much about the cpu in technology terms. Even if for the sake of argument I grant that the 7950x / 7950x 3d is more efficient in mt workloads, the 14900k takes 2nd place. So the 2nd most efficient cpu, how can you call that not efficient. It blows my mind.
Also you don't need to fiddle with the bios. The first you try to get into the bios (to set your xmp for example) it will ask you, what cooler you have and will set the limits accordingly. We'll if you put that to "unlimited wattage" you can't then complain that the cpu isn't efficient. I mean, duh.