Nope. In Plasma Desktop, we still have the fully featured "exposes the file system a lot" file manager Dolphin.
This is just for the device interface. It turns out that using a tablet (or other mobile devices) is a LOT different than using a big (in terms of storage and processing power) laptop with a keyboard and mouse.
I'd die of frustration without Dolphin on my laptop, as I'm sure many would. :) But Dolphin on my tablet makes a lot less sense.
How to balance these two different needs? Simple! Make two different interfaces over the same underlying system, tuned to the different use cases.
This way we keep the functional desktop and get a functional touch UI.
If I could ask just one thing it would be this: please don't jump to such scathing conclusions based on lack of knowledge. We aren't stupid and we are working very hard on making things that are great to use. Making the sort of blunder you seem to think we have would go against both those things. :)