I acknowledge your point regarding that pronunciation about the self-determination of Palestine and of the Kurds. It may well have been as you say. Too often resolutions are rejected by certain parties for spurious reasons, which distorts their views about matters.

In any case, if self-determination is such a paramount concern for the Catalan secessionists, they would have gone to great lengths by now to find many unequivocal ways to assert their absolute commitment to the self-determination of those peoples… which they have not done.

That “the right of the Aran Valley to self-determination would be granted in a catalan [sic] constitution” is mere wishful thinking.

What is your source?

Would that Constitution guarantee unconditional, unilateral self-determination to any region or subset of the citizenry who expressed their desire to be independent?

Does your source have any legitimacy to make such promises?