Watch the replay. You wounded the un-wounded Bounder twice, not the wounded bounder.
I just tested out WK with the following allies in play:
Barliman Butterbur wearing armor but exhausted
Rumil exhausted with Hosts of the Last Alliance in play
Bounder exhausted
Bounder fully healed
WK allowed me to choose ANY of them to wound twice, including Barliman with Armor who clearly can't take more than 1 wound anyway. If they were all exhausted, however, it forced me to exert a companion. This is a card that rule of fulfilling choices has screwed over - if I am controlling the WK I should be able to do whichever I think will benefit me more regardless of whether I am fully capable of one option. That rule was obviously intended to prevent people from taking an easy way out of a choice if they were forced with one, but it really should have been directed at forced consequences rather than beneficial choices.
Regardless, there is still a bug with WK Deathless Lord
Yes... Like many things that have been argued over, it's quite clear what the game designers intended, given the rules set in place. When you follow them logically you reach those conclusions.
There are those, however, that like to titillate their presumed intellect by rationalizing facts contrived from speculative wording and personal assessment.
I think in many cases it's pretty clear, based on what rules actually exist, and what we know about how the game designers made certain actions to function, how a given situation is supposed to play out.
In the case you bring up, bigredmf, it is pretty clear. And yes, in the test situations we've both done so far, the card is bugged anyway, lol.