Some of them are not in particularly active combat phases right now, but...
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.
Point 4 makes sense to me — though I’m certainly no expert in international affairs. What it says to me is something about the world as a whole rather than something particularly about China and Taiwan. It says that the powers that be who are interested in maintaining the status quo in the world are either unwilling or unable to enforce continuing adherence to it.
That could certainly embolden countries that are unhappy with the status quo but have until now been unwilling to challenge it.
* Russia wins within the next year and divides East and West Ukraine
* West Ukraine joins NATO, powder keg is set
* Massive arms buildups like we have never seen in history on both sides
* Within 5 years, Russia attacks West Ukraine, China attacks Taiwan, and it's on
They don't want the headache and would be rather content to stop their efforts at Kharkhiv-Odessa line (if that's even possible to achieve for them, of course).