Whatever you think about the term of democracy, it doesn’t really exist anyway, it is what it is.
That said, for the future of civilized nations to let Putin’s Russia win (which they are not and won’t and have already lost in many aspects) would be to let other dictators think invading countries by force and aggression is acceptable.
It will never be acceptable nor respected and NATO saying this spot on this week:
“That would show that aggression works and is rewarded. It would be dangerous for our own security and the world. So we must sustain and step up our support for Ukraine. We must give Ukraine what they need to prevail to win.”
This support from NATO can come more from European countries and Turkey.
If China provide lethal support for Putin’s Russia it will be the end of China.