First of all, this is not even vaporization. In the colored version we can clearly that
it's just dust, rather than smoke or vapor. This was exactly like the other time
Obito's TSO expanded and created a lot of dust. This is, once again, because the TSOs have mass and physical force behind them, regardless of what you believe their hax properties are, so them physically colliding with objects would cause physical destruction. Also, this particular instance is pretty weird given that the "expansion" was
blue in color, and was even given a slightly different shading in the manga, implying that maybe it was just an explosion rather than the jet black expansion we saw earlier. If this is indeed the case, then this point is completely null and void since we know that when a TSO is transmuted in any way, it gains completely new/different properties, and possibly lacks ones it had before. (Such as turning into a metal cage, a wind attack, a Chakra Receiver, etc). An explosion would be no different.
It's also VERY important to keep in mind that the TSO's hax are all strictly contact based, meaning they are limited to the TSO's surface area, which is usually very small. Anything beyond its surface area will not be affected by the hax because it's simply not making contact with the balls. This is extremely important to keep in mind moving forward.
So? I mean this would literally apply even if the TSOs just had molecular destruction. I don't know why you're treating this like a triumphant anti-feat for EE, when it's just a weird outlier in general. Also, it's pretty dumb to expect Kishimoto to take time out of the important events unfolding at the time to choose to highlight such an insignificant thing as the staff sinking through the floor. Finally, this was a dying Obito that had absorbed a sliver of Madara's chakra. All we know is that he had a vague amount of Six Paths chakra, but he hadn't even showcased any of the TSOs usual properties, or any other Juubi Jin characteristics for that matter, which makes sense
because he's not.
Once again, the TSOs are extremely small, and don't affect anything beyond their tiny surface area. Since you can' show us the exact point in the ground on which they are situated, you cannot prove that the part of the ground they were in contact with did not get erased, or dusted for that matter. Like, honestly your arguments so far have been such nonfactors, it's not even funny.
Also, I have been playing along so far, but I would like to further point out another reason why this whole "they didn't erase the ground they made contact with" argument is super irrelevant anyway, generally speaking. Truth Seekers' effects are inapplicable to things that contain Nature Energy, Six Paths Chakra, or both. Guess what contains Nature Energy? That's right............
.Nature itself! So it's actually not possible for the Yin-Yang empowered hax to affect the terrain lol. This would only leave the physical energy produced by the balls and the basic matter manipulation that the non Yin-Yang empowered TSOs have, which is consistent with what we consistently see.
To add insult to injury, you pretty much picked the worst possible example here. As we all know, Kaguya can control her dimensions and their terrain using her chakra, as well as showing the ability to literally fuse with them. This means that her dimensions more than likely contain Six Paths chakra as well. That's right, the other thing that TSOs don't affect.....