Considering that you can easily report the behaviour of a Uber driver I can believe it.

Reporting an Uber driver doesn't necessarily mean any action is taken.

https://www.londonreconnections.com/2017/understanding-uber-... has a story about a driver committing a sexual assault, being reported to Uber who didn't report it to the police -or- fire him, and he went on to commit another which Uber -also- didn't report to the police.

In total, Uber had failed to report six sexual assaults, two public order offences and one assault to the police. This had lead to delays of up to 7 months before they were investigated.

This is why MetPol are arguing strongly against licensing Uber.