Yes..
Spain's best chance to hold onto Catalonia was to have allowed a referendum on secession
and to hope that people voted no. This worked in the UK and may have worked in Spain as well.
Now that the Spanish government is employing facist tactics, more and more Catalans will become pro-independence. Watch Western position change if there is major repression in Catalonia by Spain.
India is constitutional republic.democratic countries run by constitution
There is no precedent in Indian And US constitutions To secede there territory base on referendums
EU is against It.Spain Will now directly Rule it as Union territory And all Voices Will be curbed in coming years
U.N. charter gives all nations the right to self-determination. This overrides the artificial boundaries of legal states.
As regards India, watch what happens by 2030 or so when the mass of Indians become educated and then start asking what is the point of India. I doubt whether rich and industrialised Gujaratis will want to pay thousands of billion Rupees every year to subsidies poor Biharis and Uttar Pradeshis.