It's a privileged american centric view on top of an american centric view. Lots of people use uber and lyft here on HN, and in other corners of the internet occupied by people satiated with a tech worker's salary. But for most working people, rideshare remains a frivolous cost that can quickly add up to the price of whatever you were doing at that destination, and it is not this world changing thing that some imagine, but just another service for the wealthy.
I don't mean to downplay these accomplishments, but I think the impact of Uber/Lyft is greater than these on a simple per capita basis. Maybe that's a American-centric view but it's far more realistic for many Americans than "no polio cases"