Are you being deliberately obtuse or just missing his fairly obvious point?
While the stuff you’re talking about is real and obviously matters, if you want to convince a no or undecided to vote yes, then you’re much better off chatting about the here and now. Talking about Dominic Cummings, Brexit, Johnson’s shameless populism and the obvious disdain which they have for Scotland will have far more effect than saying “50 years ago, this happened and that has caused a plethora of problems.” Because people can see the effects clearly as they happen, and because people can do something about them.