Even in Alexa there are some teams that are being pushed too hard. I work for Alexa as well and there is plenty of burn out and "sweatshop" teams in our org. It really varies a lot from team to team and what that team's role is.
Haha, no. I get the impression from his post history that he works for an ASR/NLU team. They tend to have a more reasonable workload than some of the other teams.