Not playing Tau, but instead fielding a large unit of (Eldar) pathfinders (2+ cover saves) I find myself being physically sick at my stomach at the mere image of that desecration you posted there.
I think I'll go get a hammer and whack all 20 of my ranger models in the head.
...
Or maybe I'll try to call a rules guy at
GW and offer him a large bribe to 'interpret' the rule for the errata.
Who would I need to call and how many thousand would I have to offer do you think?