Nonsense. Do you think it was just the Catalan's who were at the receiving end of Franco? When democracy was restored, post Franco, all the regions agreed to the new constitution. Puidjemont is either a clown, or knows his nationalist fanatic puppets are.
Mature democracy doesn't mean a bunch of minorities whipped up to a nationalist frenzy can stage a comical referendum in a vain attempt to legitimize their cause. It mean rule of law, observance of the constitution and proper process.