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Of course, it does - you may have many content farms/instances, and taking down point-to-point links can DoS your entire set of farms/instances, whereas an attack against a given endpoint access network doesn't necessarily mean that your other properties/networks/services are being attacked, as well.
And I say taking down 10 such farms is no bigger problem than taking down 10 /64 backbone links. Same challenge. A /64 is a /64, seen one you've seen them all.
There is no good reason to use /64s on point-to-point links. It is wasteful (please, no more about the supposed infinitude of IPv6 addresses; some of us reject this as being shortsighted and insufficiently visionary concerning eventual one-time-uses of IPv6 addresses at nanoscale) and turns your routers into sinkholes. It is a Very Bad Idea.
I wouldn't say it is wasteful so much as it is unnecessary but the difference is that everything is pretty much known to work as expected with a /64 subnet. Anything broken with a /64 is really broken and the vendor would be expected to get right on it. If something breaks while using a /127, the doctor might tell you to stop sticking the spoon in your eye.