I think it's largely revulsion that Uber ignored regulations, with the revulsion mostly coming from the types of people outraged by things like Newsom's recent CEQA reform.
They support these sorts of stifling rules and believe that skirting or changing those rules is a right-wing ultra-capitalist attack on the public good, despite the situation actually being the exact opposite.
I think it's less the ignored regulations (I'm also happy with the CEQA reforms), and more that they engaged in predatory pricing schemes to stifle competition. This has resulted in a duopoly that engages in politicking to lock in their position and suppress labor rights (e.g. Prop 22).
That does seem to be a right-wing capitalist attack on the public good? Like, do we still believe in markets, or are we just cool with mega-corporations setting prices and wages?