I am obviously concerned about this, or more accurately bitterly disappointed in NS that instead of pursuing an actual public consultation and impact assessment process that looks at all protected groups she forges ahead on the road to eliminating our sex-based rights, but I would echo LassofFyvie here.
This is a not entirely unexpected determination to advance the legislative process for GRA reform. Not an immediate taking effect of the proposed law (as LassofFyvie points out, we don't even know the details of what the government proposes).
And one acute and serious problem remains for the Scottish Government in this - as long as legal sex self-id is not the law in the rest of the UK, legal sex self-id in Scotland will be effectively unworkable, at least not without considerable amounts of substantial safeguards protecting women's sex-based rights (as in Ireland, where single-sex set asides can be pre-supposed ie organisations can opt out of single sex exemptions not into them).
We have a big mountain to climb, clearly, but the fight is not lost. And if we do lose this battle, we have a much better starting point for a fight back than Canadian women for instance.