To be even more fair, a huge factor in them being underpaid is that the average driver will have a hard time factoring in depreciation, which hits you on a delay.
Not to mention that Uber pretty much bait-and-switched a lot of drivers, starting with artificially high payouts and then aggressively pushing the price down, fishing money out of the drivers' pockets and making their investments unprofitable. Which is what the driver in the recent video was complaining to Kalanick about.