Good for you that you are one of the people who need the CPU. You are NOT the vast majority, however. And now tell me. How exactly do you think a 7950X3D does benefit you when a 7950X is already ridiculously overpowered for gaming? That it my freaking point. You. Do. Not.Yes, we do. Although the 13900k would not be logical if core count is the use case. I cant list you many usecases where one would do professional work and game. Let me know if you need that list.
I am both. I am 40y, i do professional work, and i game. How hard is that to understand?
It can substitute one, very well. It can be for both.
Ideally, i'd have a 4x 12c/24t Xeon server in a rack, locally accessible for my professional needs. That way, i could have a second system with 5800x3d for gaming.
But i cant, many cant. Many people who have a home, a normal home, an apartment limited to use of space home, cannot do that. So we need to strike a middle. Rather then having two separate systems, we can have one.
What many are not taking in to consideration is PRICE. The absolute minimum core count for my needs is 32, either threads or cores. Try researching a build in that realm. HEDT is out of the game cause it's pretty much dead or dissolved in to Workstations. Yes, gaming on these will probably never perform any better than a 5600x. This is where 7950 comes in, and this is where 7950x3D adds to the gaming side too.
Y'all really dont need to fight this thing just because you wont get one.
Also, I don't have any issues understanding that there are some people who need it. YOU, however, apparently find it hard to understand that the fast majority of users do not need the CPU at all.