No, this does not make sense. Both sides know the limit not to cross.

Certainly, Russia is in fact rather weak (which the author of the article acknowledges) as we've seen, and knows not to attack Nato.

In addition, point 4 in the article does not make much sense. Why would a Russian victory 'encourage' mainland China to invade Taiwan, for instance? It wouldn't change anything there.

To me this feels like a typical scaremongering piece for the purpose of shoring up support for Ukraine when it is said to be somewhat waning but it fails to make good points.