What TX is or is not doing, no idea, but odds are its probably leveraging the same thing with DRM and a way to make this usable by the average end-user even if it will likely result in blown mainboards.
Nintendo can patch a bootloader bug at factory, and with all this attention they will most certainly audit their bootloader (again). They audit all of their software now, and they've been fixing nVidia's screw-ups and bugs we didn't even know about/fixing bugs harder than expected. So their eyes will turn (and probably have for months) on the loader and figure it out, or someone like f0f will just simply report it and then document it in a year or so.
We're going fast...
... and we're burning exploits, running out of the wick.