Yeah, I think it's important to not whipsaw between idealising and devaluing Russian military capability.
To a large extent, even if they lose, they win (eg. as the article says, Ukraine may need to withdraw from defensive lines in the east to defend Kiev, in which case Russia could make a land-grab there). There will be contingencies for all sorts of different definitions of "win".
And in another sense, even if they win, they lose, because in fighting as best they can, they expend capital and expose all their weaknesses to view. And even if they achieve absolutely maximal war aims, like capturing the entire country, they are likely to find themselves in a situation that they are pretty unprepared for. I think states go to war hoping to achieve the maximal goals, but most prepared to achieve some subset of them before time, money, political support runs out.