There are many things wrong with how they operated, and some should probably be severely treated. However I don't know about the comparison with terrorist attacks, I don't even think BW's somewhat cynical justifications do it justice.
The claim that the victims don't know the difference is obviously true, but it is rather trivial in this case. Intent does make a big difference, some would say a crucial difference, and that would put the raiding team's crime somewhere in the spectrum between "undesired consequences - accident - negligence - criminal negligence", but that is still quite a way off intentionally targeting the innocent. Different war ethics approaches do recognize the above (a degree of legitimacy, or lesser severity, to instances of innocent casualties - "the Doctrine of Double Effect", etc.). But also, if we're not being intentionally cynical about it, I think common sense also does.
What gives this kind of comparison seeming credibility is, IMO, the questionable moral status of the US in general, in many places in Europe and beyond. While one would find it hard to defend the US against some of the other charges, I'm not sure the do enough to prove they are (as) guilty in the specific case (they could be, I don't know all the details, but from the little I read I don't see it as the same type of thing at all). The described actions, though horrifying, put a big professional question mark over the executing team, and indeed on how satisfying their performance was ethically - but, unless we know further details (such as: "civilian/innocent lives didn't count for much in the operating unit's ethical code", or their application of it through education and practice) it cannot tell us enough about the actual ethical code.
Do we need to know much about terrorists ethical code? are there many missing details? I'm not sure about that.