I was too angry to talk about this earlier, but I've calmed down. So here's my thought.
There is actually some slight precedent for this. One of the things almost everyone overlooks about the "Klingon Forehead Problem", as it used to be known, is that in TMP, the Klingons looked like this :
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And they all looked like that. A single ridge running from nose to back of head. No unique pattern of crenellations on each head.
Now with these guys... well, I guess the "normal" Klingons, the TMP guys, and these new guys, could all be different races of Klingon with different appearances. No different than putting pictures of a Great Dane, a Golden Retriever, and a Rottweiler next to one another and saying they're all one species. So it's justifiable, technically.
Though of course it brings us to ask where the hell all these variants have been since then...
That said, this confirms the thing I've said about this show all along - it's going to completely ignore the TOS aesthetic, trampling all over it on every passing whim of the writers.
And if that turns out to be the case, then fuck this show.