charged excessive fees to people trying to leave the scene of a hostake crisis after public transit was shut down
Okay, the government decides to shut down the government subsidized/run public transit (i.e., reneges on their implied commitment to their customers) and you blame a company that tries to provide at least some people a substitute service? How do you suppose Uber might increase supply of drivers to meet demand? Hmm..., maybe they could offer drivers more money to show up and offer rides? How might they fund that effort? Hmm..., how about by charging the consumer more?
This is a case, fairly rare actually, where supply can actually be increased to some degree almost instantaneously - but there has to be a motivation to the supplier to do so. If an Uber driver is at home gardening because they decided that the pay for rides wasn't high enough to motivate her to offer rides instead of garden at that moment, the most efficient means to get her to change her mind and thereby increase demand is to offer her more money. This is no different than how employers staff their positions -- if they have a need that they can't fill, they increase the pay until a qualified person is motivated to take the position.
From what little I know, Uber does seem like a pretty crappy company but I don't see how them utilizing well understood market forces to match supply and demand is a bad thing.