It really makes very little sense to forbid a person from driving a passenger for money
No one is suggesting people shouldn't be allowed to drive for money, nor that Uber shouldn't be allowed to run their service, but simply that if Uber drivers are doing the work of employees they should get the benefits of being employees.
The only real difference that would make is that Uber would be a little more expensive to use. It'd still be cheaper that a taxi. I think that's quite reasonable if it means Uber drivers have a happier, more stable life.