It seems unlikely that the people of Donbass do want to be a part of Russia now that they’ve had a taste of occupation.
Being conscripted, given third rate equipment or no equipment at all and being send to die is not generally an endearing act.
You don’t get to instigate a rebellion using your own intelligence and military assets, and then invade your neighbor and claim that you never did, that’s just bullshit.
This entire conflict was instigated by Russia.
It’s very hard to invent a movement in another country. Were they backed by Russia from the outset? Obviously, but they had real reasons to be upset with what the new administration was doing. This is a little like dismissing the people who disagree with you as bots, it lets you avoid needing to consider that some people might have good reason for opposing your favored side.