I don't see any basis for this view. There are indications that the two sides may be sleepwalking towards a great conflict. But neither side is specifically intending to start or escalate towards such a conflict.

Every media outlet in Nordic countries talk about a Russia-NATO war within the near future or whether Russia and NATO already are at war. NATO leaders are publicly asking for more defense spending to combat Russia. If you read Nordic message boards, most users are cheerfully looking forward to "winning a war against Ruzzia", and I don't doubt that the same idiotic attitudes are found among the Russians as well.

But that is not the same as saying that "war is being planned". The latter implies an actual intent/desire to start a war, the former does not.

Today from Russian media: "Bandera Ukraine, blah, blah"

That phrase on its own should indicate that what you are reading is pure verbal flatulence. The speaker in this case (Medvedev) should be another strong indication.

If you read Nordic message boards, most users are ...

I was referring to actual reality (i.e. what decision makers at the state level are planning). Not what randos on the message boardz are saying.

I have heard the spin that Russia made a move on Ukraine because if they became a NATO country there'd be more NATO at Russia's border, but... they still started it. They can't finish it because they vastly underestimated their own abilities though.