Yes of course you are correct in making that point.
Arguably the Scots and Irish will be suffering from that power and we know how they feel about that.
But here’s the difference.
In the normal course of time, any legislation passed by one Government can be repealed by another (for example the European Act 1976??) but in this case we are taking a step that is absolutely irreversible and our rights are being given away, not least some of yours, mine, all expats and all Brits.
We have the right and duty to challenge, not the decision, but the process and objectives.
The Government’s strategy is:
a) being gradually exposed by leaks some accidental, some deliberate, some through discussions “we are not having” with ministers in EU member states, etc.
b) being modified step by step as the political and economic consequences of the referendum is filtering thru to the so called “Brexit Ministers”
Was this avoidable? Of course it was. Maybe we will all prove to be wrong but the legal opinion that I have received is that this is case the Gov’t will lose and I am sure they have been told that by their legal advisors.
In a different life I spent some time in litigation in the High Court and was told by both sets of counsel, that they “usually knew” the result before going into court but their “clients” wished to carry on for various reason.
In this case the Gov’ts cannot be seen to be soft on Brexit and so we plough on wasting time and money just so nobody can say “you didn’t try”.
On the same basis, we have a trio of “Brexiteers” as ministers so again when the deal is done which is no way will match the campaign rhetoric nobody can say Mrs M didn’t put the “1st team” to do the negotiations.