It's one thing to push for independence itself to gain full sovereignty, though with the implication they'd join the EU right away they wouldn't have it for long, but don't pretend like it's somehow going to make Scotland "better".
I really hate the word sovereignty beign thrown around because in and of itself it doesn't mean anything. At least not in the way that Brexitiers use it.
Isn't that the essence of politics?
You're basically trying to convince people that the system would be "better" if things were run the way you proscribe vs someone else. Of course different people have different preferences so it's likely some will perceive it as "better" and others will perceive it as "worse".