Please stop throwing emotional words around, what do you mean by "punished","revolt","singled out","putting down","step motherly" ? You are not putting any facts on the table, punjab was under presidents rule when it was fighting terrorism.
There was no revolt in any of the states majority of the ppl had become bystanders while a bunch of extremists tried to take power and sow chaos . The state had to seek centers resource and support in crushing them as these terrorists had external support from countries like pakistan. It is no different from fighting a war without crossing the boundary. You do understand the full meaning of term "Proxy war", rt? A good current example of it rt now is taliban in afghanistan, no one calls it revolt they call it proxy war through cross border terrorism.
Your concerns about other states are misplaced, why not BJP do the same on WB instead of fighting a pitched battle? Its simply not possible,India is too big to be ruled/controlled by centre through presidents rule. With economy in doldrums no idiot will think of playing any political games.