But you will put your overly expensive NATO on the very expensive watch with $2 spring bars.
For me personally, the argument that you are making is the least compelling argument for an "expensive" NATO.
If someone prefers the branding (as in the second part of your argument), or finds that the quality differences are worth the extra money, that's great. But the "expensive watch should not be on cheap strap" is the least thought out in my view.
Personally, there's no way in hell I would pay that much for a NATO strap, because for me they are a utility strap - I wear them on my beater SM300 (yes still worth several thousands of dollars) and when I go on vacation for a few weeks, I take a few straps with me, so when they get dirty I can just swap them out and throw the dirty one in the wash. Once they get too grubby, they are disposed of.
I also don't like overly thick NATO straps, because I want one where the fold of the tail end under the keeper sits flat, not sticks up in a loop like I see on so many of these more expensive NATO straps. The thicker straps also add more height to the watch, something else I do not want.
So if people like them that's up to them, but for many reasons, they simply aren't for me.
Cheers, Al