By "reaching" do you mean you think they're making too big of a deal out of it?
My friend had 5 cows he bred to my Proud Jazz son three years ago. His Double Stuff based cows produced 2 afflicted calves. It hurt me to watch one of them walk. The other was not so bad, but obviously not right. Pictures were taken and samples were sent in. 2 out of 5 is a high enough percentage for me to be concerned. I fed out the heifers for him and took them to the locker. They were of no value at the sale barn. One finished out okay, the other did not gain very well. I might lose weight, too, if it hurt that bad to move. I did not have any afflicted calves, I assume since I had no cows with Improver in their pedigree that were bred to that bull. I have kept a bull calf I raised for possible future use. Testing is being done right now. We'll see how it turns out.
Another friend used a related bull in his herd. He sent in 10 samples for DS testing. 7 of them came out DSC. He said he just sampled 10 at random, none of which showed any visible symptoms. He only tested because he had a DS calf and wanted to know where it came from. If you're absolutely positive you have no TH, PHA, or DS in your herd, then it may seem like a big deal is being made out of nothing. However, since we are supposedly supplying breeding stock to people who, as one gentleman put it, "don't know TH from 4-H,", then it should be a big deal to us.
Lots more to understand about this defect. Things are slowly coming out. The identification of carriers, to me, is a huge step in the right direction.
By the way, I overheard a few commercial Angus producers talking at a farm sale I was at last week discussing the "6 calves that were born with their brains outside of their head." That's one I'm not familiar with, but it doesn't sound good.
