My main concern is the decision, taken by Sajid Javid, to deprive her of UK citizenship in the first place. It smacks of playing to the racist gallery (where there are plenty of votes) and sends a terrible message to any UK citizen with dual citizenship (or the option of citizenship elsewhere). If I were in that category, I'd feel very worried right now.
For me, the question of Bangladeshi citizenship (whether the Supreme Court made the correct decision or not) is largely secondary to this fundamental point which is about racism, and the potentially arbitrary exercise of power by the executive branch of government. It is another step on the UK's journey to becoming a far-right, authoritarian state.