It is still a dictatorial policy that hasn't been enforced in decades and that was under dictatorship. They already got flack from the 'no' camp for how they handled the referendum with violence. This is just going to turn more of Spain's own people against them.
It is actually a copy of Article 37 of the German constitution who is also Article 100.1 of the Austrian, 126 of the Italian one and 234.1 of the Portuguese one so it’s far from an exception.
Applied under dictatorship ? Franco died in 1975, this provision has been created under the constitution of 1978 (who was approved by referendum and by over 90% of the Catalans), under the elected government of Adolfo Suarez who was the first elected prime minister.
In addition, Franco’s Spain was a centralized country, while Juan Carlos’ Spain is constituted by autonomous communities. Having an article 155 in a centralized state would be like having a 5th wheel in a car: totally useless (hence why France for example doesn’t have an article 155). It became necessary because of the autonomous statutes that appeared in the newly democratic Spain. Your knowledge of Spain is really dismal.
Hasn’t been applied in decades ? In 1989 and almost in 2006 where a Royal Decree 421/2006 was enough in the end. It is an exceptional measure to regain control of local governments gone rogue. SA has actually the same type of provisions. And the Catalan DUI is an exceptional situation justifying it.
Dictatorial ? Again there’s nothing more democratic than applying the democratically created laws (that the Catalan authorities blatantly disregarded). Selective enforcement of the law would be what is undemocratic (such as the NPA and JZ). They are unhappy with it ? They can win elections and change the law, that’s how democracies work.
The Spanish people is absolutely not against Article 155, please read the Spanish news once in your life !
My Facebook is actually full of people reposting the King’s speech and bashing at the Catalans, that’s how Spanish feel.
PS: According to the last polls, 68% of Catalans are in favor of new local elections (that Puigdemont is rejecting).