You're rather missing the point
I don't believe I am.
Everything you said in your post, I agree with, but you didn't really address what I'm saying, so I don't think we're on the same wavelength.
This was only one experiment, and that's why the statistical significance can still be ignored. This study has no peer review so it's all anecdotal at this point.
As far as not being able to tell apart things that other people might be able to, see if this sheds some light on my point:
The people who perceived differences in the beer really didn't know what was so different, so some of them got lucky, and they were split down the middle which one tasted better anyway. This does not call into question whether or not the beers were different. We know they were. It just barely made a difference. Give 20 people two oatmeal cookies and one chocolate chip, and 20 people will get the triangle test correctly. This means the different hops are not
vastly different.
This is unlike your red/green light analogy. In beer terms, 10 people weren't sure if the light was even on or not. 11 people agreed the light was lit. Five of those people said it was red, five of them said it was green, one of them thought it was brown. This is absolute garbage data. If you weren't there to witness this traffic intersection yourself, you'd have no idea how to extrapolate this without further testing. All we can gather is that the data barely leans toward the light being illuminated.
Based on this data, do you have safe driving conditions?? Are these effective lights? Ready to install them across town?
When you have to split hairs over the taste of beers with "statistical significance", that should raise a red flag. It doesn't mean no one can tell a difference, but OP might not, and I don't think I would either, so my hop choice is unimportant to me.
Furthermore, let's say you had an IPA one day, and a stout the next. You'd be able to tell, from memory, that the two beers were dissimilar. If you drank two IPAs with different bittering hops a day apart, I'd be willing to wager you couldn't tell which was which. You'd like them both, and you'd only
possibly prefer one over the other if you tasted them back to back. Since most people don't brew two batches at once, this will never come up, so the difference is negligible, because you'd never know if you're drinking the beer you "liked" or the one you "liked almost as much". You'd drink two or three of them, dulling your tastebuds anyway, sit by the fire and have a great night.
You can just safely buy whatever bittering hop is on special at the store, and roll with it without fearing a detrimental change to the taste of your beer. It'll be fine. RDWHAHB applies.