I think that as people criticizing a regime, despite the regime's terribleness, we have an epistemic obligation to provide alternatives. If I explain why your perpetual motion machine cannot work, I am not obliged to provide you with a plan for a working perpetual motion machine. If you don't know how to live your life without claiming to have plans for a perpetual motion machine, that cannot oblige me to figure out how to make your fantasy a reality.
Wow, that's one way to deconstruct an argument, I assign one Philosopher King point to this Ben Guy who this comment alone.