I don't know the motivation. Perhaps someone feels harassment is a real problem, but can't find any real examples of it, so feels the need to tell lies for a good cause? Perhaps someone merely wants to harm Uber? They certainly have no shortage of people who hate them.

But regardless of motivation, the facts show that many people are willing to fake stories just to support their "team". Sometimes they do this at great personal risk and cost, e.g. lighting their own truck on fire or making false police reports. As an example of one category, there have been many such incidents since Nov 7:

http://www.dallasnews.com/news/crime/2016/12/23/denton-man-s... http://www.breitbart.com/texas/2016/12/14/hate-hoax-nyc-musl... http://www.philly.com/philly/blogs/real-time/S-Jersey-man-ar... http://www.clickondetroit.com/news/ann-arbor-police-womans-s... http://patch.com/new-york/gardencity/man-who-drew-swastikas-...

So it's hardly beyond the realm of possibility that such a person took an hour to write a medium post in an incognito window for such purposes.