I honestly haven't read that. but i take your word for it. im under no illusion that (all completely hypothetical as nothing had happened yet) if an independent Scotland was in the EU, and England wasn't, some type of border would be needed. I'd guess the point is more, it is easier than N.I. due to no GFA. During the indyref, there was threats of a border, which at the time, with both in the EU was total mince. Obviously if brexit happens, the political landscape changes. You clearly know the context it was said in, i don't.
I don't deny there is inherent hypocrisy to both 'movements' where certain logic overlaps. As evident in your own posts as much as anything, and mine probably, and anyone's who tries to apply one logic to one and not the other.