Not because they are seeing sense, but because the Haldane judgement was so scathing there is no chance of winning
I cant read the article, but Lady Haldane was only saying what Scotland wants is not what the over riding UK legislation allows.
But once Labour comes into power they are more than likely to change the over riding UK legislation so that the Scottish GRR want be needed because all of the UK will have the same self id law.
This is only a temporary stay.
Once Labour is in power there will be no protection against underage self id being legal.
Ironically we need the SNP to do really well in Scotland to reduce the number of Labour members elected from Scotland to Westminster as they will help bolster a Labour majority.