It's really hard to say because the article limited it to this:
> During his second week at Amazon, Smith was approached by workers involved in organizing the Amazon Labor Union. Although Smith loved his job, he thought there were things that could be improved. In particular, he said, he was concerned about the warehouse’s extremely rapid pace of work and lack of breaks.
Not many others from him on his issues with work conditions (there were others from other people about Amazon). He actually contradicts himself. This is him describing alleged intimidation after he because active in the union (emphasis added):
> Everyone else working around me was working at their own pace and he was just on me sending me more carts to sort and telling me to work faster
One reason he gave for joining the union was "the warehouse’s extremely rapid pace of work."