Hildegarde

Every state requires proof of citizenship to register to vote. All registered voters are citizens. Read a book.

That’s been their behavior continuously since the country’s founding. This is nothing new.

Commercial fire systems treat a sprinkler activation as an alarm condition. You wouldn’t be able to wait around for 30 afterwards. Fire department would be there which would cause issues for your plan.

Modern commercial fire systems are very good. There are no simple solutions for arsonists. They would need physical access to the building disable the fire systems, or to be able to produce enough fire to overwhelm the spriniler’s abilities to extingush it.

Few have both the will and ability.