I know that a lot of right-leaning Americans think that government should stay out of private contracts, but they'd be dead wrong. If the employee was just as powerful as the employer, then the situation would be different.
(1) The existence of the lawsuit means that the generalization serving as the explicit premise here is incorrect.
(2) Without defending Marxist class struggle as a valid or correct framework for addressing reality, the idea that the drivers seem generally satisfied with the arrangement is relevant to whether characterizing it as a Marxist class struggle is necessary may reveal a poor understanding of the entire idea of Marxist class struggle and particularly the role of class consciousness within such a struggle.
People are more important than you're business model.