It's very odd phrasing though, isn't it?
"China" is the subject of the sentence, while "800 million people" is the subject.
The implication being that China - or the CCP - was doing the lifting. The people just kind of passively did got carried upwards.
Even the choice of verb is illuminating. "Lifting", making the number after it add a sense of difficulty to the achievement that "China" accomplished.
People do not talk this in real life. No one is broke, moves to Boise, Idaho, and then says "Boise, Idaho lifted me out poverty".
So yes, "China lifed X people out of poverty" is 100% a canned propaganda phrase. The more neutral description of what actually happened is "China transitioned from a low income economy to a middle income economy".