Russia is a mess but it will be much worse if Putin goes and if all the strings he's currently pulling fall into other hands. Not just for Russia but everywhere that Russia is involved in - Azerbaijan vs Armenia for starters, which Russia is just about keeping a lid on, pretty much all the Stans, several west African countries where you've already got shady private/mercenary involvement, not to mention the surge in mercenary neo Nazis across Eastern Europe. Nobody else wants to deal with any of that hence world leaders being quite happy to leave it to Putin.
As for Russians overthrowing leaders they've only done it the once and it did not end well. Maybe there were a few weeks, more than a century ago, where things looked like they might be okay for the ordinary Russian but that's pretty much it.
And all of this is way outside the control of a soprano opera soloist.