There was a study that came out in August noting that Uber & Lyft are infact causing congestion: http://www.schallerconsult.com/rideservices/automobility.pdf
Summary via NPR: https://www.npr.org/2018/08/01/634506179/ride-hailing-servic...
Summary via NPR: https://www.npr.org/2018/08/01/634506179/ride-hailing-servic...
This idea that one single subset of driver's is responsible is kind of absurd.
Furthermore, the amount of construction that takes forever causes tons of problems. For example, Van Ness alone has been a total cluster for more than a year now and there's no sign that it will be concluded any time soon.