She addresses only one thing: was life better pre 1950 viz a viz today for Tibetans. Of course, it’s better today but that in no justifies what China did.
Going by her logic, life under many dictators in the 20th century improved by leaps and bounds in many countries; does that justify their rule.
By directly attacking the person above, you are indulging in Ad hominem.
Salvador Allende era Chile had much worse indicators than Pinochet era one. Going by your logic, one should support the violent dictatorship of the latter because it had better economic indices.