There is talk about necessary defensive preparations for a larger conflict. The primary goal of which is to deter such a conflict from starting in the first place.

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.