As for constitutions- my view is they should do no more than set out how how laws are made, who administers them and who interprets them. They should be value-neutral, otherwise society gets caught by what a lot of dead people thought. The US currently has that problem quite acutely while countries based on the British model do not
The key - in fact defining - characteristic of any constitution is that it must sit above any single pillar of government, if you accept the 3-leg model of executive, legislature and judiciary. And as we know in the UK there are enough people who think a constitution is a morning walk that can be a difficult prospect to grapple with. A populist regime will always just point to it and judges and claim they have no sway over the "democratically elected" government.
Exactly what is happening in the US right now. Where it's clear that the concept of "teaching" the constitution in school hasn't really paid off. The vast majority of US citizens seem to think the consitution is a morning walk a British person takes.
Meanwhile, back on planet earth, until parliament chooses to legislate, SCOTUKs decision stands. Forever.