That's kind of lame. We all know that when it comes to storage and gaming, even the oldest of SSDs is going to be just as beneficial as a brand new M.2 device since storage speed plays VERY LITTLE into the performance when gaming. There are FEW instances where storage speed has any affect in games, and none are while actually doing anything. Loading times are ALL that will be affected, so the whole "the whole weak spot for me was the storage" really doesn't fly.
Even in NON-gaming, unless you are consistently using that drive for large file transfers to another SSD, the benefits of an M.2 drive are minimal. It will net you a big fat Nothingburger when it comes to 85% of what most users do on their systems which is mainly RANDOM access and RANDOM reads/writes. Will it boot faster? Usually. So yeah, you'll save half a second over a normal SSD. Will it load textures, maps, levels, etc. faster? Sure, so again, you'll doing do those things twice as fast as almost instantly like with a standard SSD, which means you probably won't even notice the difference.
For just about everything else, it's highly unlikely you'll notice any difference except on benchmarks. Windows and games won't be faster just from having an M.2 drive in most cases. Now, if you're using that drive as the primary device for professional graphics or 3D applications, you might definitely see some benefits from it especially if you're working with, saving and loading very large files and projects. Otherwise, for a primarily gaming type system, it's a nice to have, not a weak spot.
"Power hungry beast"? Can you show me where there is DEFINITIVE proof that the 9900k is? Because it's a 95w CPU. EXACTLY the same as the 8700k (And more efficient actually, because it's the SAME TDP even with two additional physical cores.) and has LESS power consumption than the 2700x (105w). I see a lot of fail in this thread or at least a lot of misconceptions when it comes to an understanding of the realities of this hardware.
Especially since not everybody intends to overclock a CPU that has already been pushed to the limit in terms of it's stock behavior from the factory. The overclocking headroom for 95% of 9900k samples will be so low that for most people it won't be worth doing anyhow without extreme measures and even then, is not really something recommended at that level for a daily driver.
And no, the original build did NOT have a 2080 TI, it had a 2080, else I wouldn't have posted that.