I think I'll bow out of the discussion here, whenever people start posting that video there isn't much left to talk about.
The narrative "big bad Russia against small peaceful Ukraine" is very simplistic, and only leads to support of escalation of conflict.
FWIW: Big bad Russia against small peaceful Ukraine is the reality far more than any alternative that you might want to supply.
It's still not sure if it will take Donbass. All the new captured parts of Ukraine are becoming new or join existing "People's Republics". I won't be surprised if after the end of campaign, there still will be independent republics and some shaky agreement that will be broken by Ukraine in the first week.
Even first plan was apparently to overthrow government, not to gain some land.
On other hand, the tactics of West/Zelensky is to destroy the East as much as possible, killing as many people as possible, destroying as much infrastructure as possible.