If, as expected, Humza Yousaf resigns today as First Minister of Scotland, it will be the beginning of the end not just for him, not just for the 17-year long SNP government, but for any hopes of Scottish independence happening in the lifetime of most SNP members. Yousaf might even take devolution with him since the Scottish public are at their wits’ end with the behaviour of the politicians – all of them – who have occupied the Scottish parliament like student activists taking over the university court.