Hmm, weird. I run one of the larger korean music platforms and interviewing Koreans I'd have said the opposite with regards to the North-- that is, they do not want to reunify and it's the furthest thing from their minds beyond that they hate the draft.

I noticed even the North doesn't seem to be eying reunification seriously either, taking steps to destroy monuments like https://en.wikipedia.org/wiki/Arch_of_Reunification earlier this year.