Enterprise dedicated a few episodes showing/explaining how the Klingons went from having ridges, to having no ridges. This appearance of course continues into the Kirk episodes. ST:SNW sits between those series and we see Klingons with ridges (in S2Ep1). So what a I missing.
The whole ridges/no ridges thing was dumb to begin with. The explanation is easy: Next Gen had a bigger budget and could afford it. It would have been perfectly understandable to just say "The Klingons in the original series were the same as the ones on next gen. They looked different because they could not afford to put every Klingon in the makeup"
That was the official explanation for many years. When DS9 brought back TOS Klingons Kor, Koloth, and Kang, the actors who had played these characters back in the sixties with nothing more than dark makeup and bushy eyebrows were fitted out with the contoured foreheads, snaggle teeth, and so on. And you, the viewer, were meant just to assume that Klingons had always looked that way, and the reason they didn't in TOS was that show just didn't have the budget to portray them the way they were portrayed from the movies onward. I believe Gene Roddenberry came right out and said as much at one point.
And then DS9 went and made the episode "Trials and Tribble-ations."
Now you are going to show scenes from a TOS episode featuring Klingons, and put those TOS-appearance Klingons right beside Worf with his post-TOS visual appearance. It makes the issue impossible to ignore in the story. So they fudged. Ron Moore said they just had Worf dismiss it with a "we don't like to talk about it," excuse, because there was no explanation they could come up with that didn't sound ridiculous.
Fast forward to Star Trek: Enterprise, and for the episodes "Affliction" and "Divergence," and Manny Coto and his writing staff managed to come up with an explanation that worked and didn't sound ridiculous.
Unfortunately, since the writers of this show have chosen to ignore that and depict Klingons closer to their post-TOS appearance, they've mucked up the continuity again.
Blame it on Discovery for having Klingons that were beyond anything any fan would like. Once they had those Klingons, they couldn't go to smooth skin without further controversy. so now we are back to the Ruffles version of the Klingon race. I liked Enterprises answer to the question and it fit in with Worf's comment. At least Discovery Klingons seem gone for now.
I loved the "we don't like to talk about it" reason I believe they should of left it at that.
It made me think of some kind of ridiculous klingon fashion of the time a bit like in our society today with women pumping all kinds of fillers into there lips and ridiculous implants.
Still I got to say the first time I heard that line and they are sat round the table staring intently at worf waiting for him to explain and he simply says "we dont like to talk about it" did make me laugh out loud, and is one of my favorite trek memories.