No that isn't my point, QM.
To use an analogy which may help, if a member [Scotland] of a private club [the United Kingdom] wants to leave, he simply does. He does not have to ask anybody. However in a private club not only does the individual have the right to leave, the club has the right to expel him. If the question of the individual's membership is under debate all the other members of the club [the electorate of England, Wales and Northern Ireland] should be asked their opinion. And they have not. It's not a question that English people should be in a position to prevent Scotland leaving (though as I explain below I believe, srictly speaking, that they are); it is more a question that they should be asked if they want Scotland to stay.
Your contention is not quite correct, hb. The Treaty of the Union cannot be dissolved unilaterally. Article One of the treaty:
"...that the Two Kingdoms of Scotland and England, shall upon the 1st May next ensuing the date hereof, and forever after, be United into One Kingdom by the Name of GREAT BRITAIN."
Note "...and forever after". Not until one of them gets fed up with the idea. Note also that none of the other 24 Articles make any provision for the Treaty to be dissolved unilaterally. Note also Article 3 which provided for the creation of the one, unified, parliament of Great Britain and Article 25 which provided that all laws of either kingdom that may be inconsistent with the Articles in the Treaty are to be declared void.
All this indicates that the Treaty is permanent and whilst I repeat it would be undesireable for the UK Parliament to compel the Scots to remain in the Union against their wishes, the determination on that issue is a matter for Westminster alone.