I don't think there's anything to judge here. Amazon said multiple times that with bonuses and stock awards their average compensation was well above any compensation for fulfillment workers in the sector.
People thought this was bullshit/paper money and kept demanding for a higher hourly wage.
So Amazon did the logical thing. It increased the hourly wage, removed a highly unappreciated and misunderstood form of salary and simplified the compensation scheme so it could actually rebalance this value into a more predictable, easy to understand and liquid compensation. This should help anyone that felt exploited and of-course is going to piss off the people who actually understood the variable portion of their compensation and the ones who were already above the 15 USD mark.
I don't think what were people expecting? Hourly wage raise + stock + bonuses?
I mean I don't want to sound like a capitalist pig, but that doesn't make sense, especially when we are talking about this kind of job.
People deserve livable wages but also they deserve to get recognized economically when they pursue advanced studies and put the effort to get into jobs that require more specialized skills.