Well I'm no fan of breaking up the UK. But if you recall the Scots were promised by a Tory government to vote NO stay to stay in the EU. Within months of NO vote secured, they embarked on their EU referendum journey to try and save their own party, this having failed to secure a majority...
Johnson was a boom for Sturgeon it was too easy, regardless of her reason for leaving I think we've seen peak Sturgeon and hopefully peak SNP (unless the Tories get in again)