Nobody gives a shit about Russia, but there are plenty of countries who would not want nato to succeed, if only to keep what is now Russia away from them once the country collapses under the population drain and economic oblivion caused by the conflict.
We already have certain hostile countries engaging in more or less subtle support, for example the Iranian suicide drones that somehow made their way into Russian hands in large quantities. China would not want nato to have Russia, they would rather claim it themselves.
It takes months of prep to attempt to cross the Sth China Sea and they cannot hide the buildup. There are only about 2 or 3 months of the year when it is even possible.
Taiwan has almost perfect defensive geography. There are only two possible landing sites and Taiwan has been preparing them as killing zones for the past 70 years.
Honestly, Russia's progress in the past two years would look like a stunning success in comparison.