Don't worry though, they have high-viz vests so they're clearly safety conscious.
If they were employees and shared liability with FedEx these issues might not exist. But they do exist, and if Amazon can do no worse it'll be a wash for pedestrians and cyclists. At least in this part of Floriduh.
tl;dw: people think they're going to be "Amazon Business Partners" more like you're another cost center being squeezed as much as possible