A coup by a PMC of one of the biggest nuclear stockpiles in the world is worrying thought.
Yes, though if it is just him then it's not likely to be successful and if it's not just him then there may well be another possible leader in waiting. I mean he has positioned himself as a contender of course but there will be others who are interested in ditching Putin too... (if that is the intent), he's still avoided directly criticising Putin and has directed his anger at Shoigu...
There are so many scenarios here... like how farcical would it be if Shoigu now gets sacked and Putin makes some promises to Prigozhin etc.. to clam everything down and they just ignore the fact there has been a bit of shooting/killing between Wagner and the Russian Army and Russian internal troops.
China is going to go nuts about this... they seemingly gave the nod to this whole 3 day SMO thing in the belief it would be over quickly not wanting it to drag on like this and certainly not wanting potential internal conflict within Russia.