That's irrelevant.

   The data subject shall have the right not to be subject to a decision based solely on automated processing, including profiling, which produces legal effects concerning him or her or similarly significantly affects him or her.

Nowhere in article 22 [1] does it restrict the scope to employees.

If Uber processes data, and makes decisions based on that data in a purely automated way that significantly affects people, it is not allowed. That's all there is to it.

[1]: https://gdpr-info.eu/art-22-gdpr/