The article talks about them trying out tons of different company robot models on a closed obstacle course with a Rivian and that they "may" have test runs in the real world.
That's just tire kicking. Amazon is nowhere near "marking a significant step towards automating the final leg of its logistics chain."
Yeah they tend to stall some times. I planted 3 bulbs one year and barely got a foot of growth. The next year they came up fast with multiple stems and 1 had multiple flowers.