So I watched the Stone film in its entirety; I'm not going so far as to call it a documentary.
That doesn't mean that there wasn't interesting stuff. Those interviews with Putin, Yanukovich, and the interior minister will make great material for anybody producing a REAL documentary juxtaposing them with people who do not seamlessly agree with their and Stone's narrative.
I'm not going to dissect the Maidan events in detail. But I do have major quibbles with the history. Especially as it tries to bolster Putin's Nazi story.
There is no doubt that Ukraine was the most anti-Soviet section of the USSR when the Germans invaded in 1941, and that many Ukrainian volunteers joined the Nazis, including participating in the Holocaust. Anti-semitism in Ukraine was as virulent and genocidal as elsewhere in Eastern Europe.
But the film starts with Ukrainian collaboration in 1941 and completely skips over the reason for Ukrainian anti-Soviet and anti-Russian attitudes: not Ukrainian nationalism, but the basic but essential fact that in the 1920s/30s Stalin had tried to kill them all, and succeeded to the tune of several million Ukrainian peasants. Knowing that might explain a bit.
What it does not support is the implied idea that somehow there is a continuous strong Nazi streak running through Ukrainians, from back then to today.
It is true that a variety of radical groups emerged in 2013/14 on the fringe of the Maidan movement that toppled Yanukovich. Organizations such as the Azov group have actually enjoyed some uncomfortably close connections to the state. But they were always politically irrelevant. In the last elections in 2019, the far-right groups and parties mentioned in the film, like Svoboda, teamed up, together got less than 3%, and didn't win a single seat in parliament. Hardly the basis for a government run by Nazis.