No matter how justified or not the coup is, the military overthrowing an elected leader is as close to the opposite of any notion of democracy as I can imagine.
Second, just because a coup is overthrowing an elected government that, having achieved power, is subverting democracy, doesn't mean the coup is itself democratic. A military coup is the opposite of democracy. Democracy has been restored in plenty of countries previously ruled by authoritarians without recourse to the military.
World politics isn't my strong suit, could you give a few examples? Thanks.
Would a military coup in China be the opposite of democracy? Then what do they have now? A different opposite of democracy? I think you wanna paint a black and white pic of the subject but that is impossible