Best takes (so far):

  - Nobody has figured out how to make money from AI/ML other than by selling you a pile of compute and storage for your AI/ML misadventures.
  - "AWS stole our open source project and turned it into a service!" is the rallying cry of people who suck at business models.
  - Amazon's managed ElasticSearch offering is awful because it's ElasticSearch.
  - A major reason to go public cloud that @awscloud can't say outright is "you people freaking suck at running datacenters."
  - Route 53 isn't really a database, but then again, neither is Redis.
  - MultiCloud is a good idea if you're tetched in the head; it treats cloud solely as "a place to run a bunch of VMs." If that's all you're doing, go you I guess. Bring money!
  - Reserved Instances are the best way to take the on-demand promise of the cloud, and eviscerate it completely by forcing customers to think of it like it's an ancient datacenter. "Enjoy your three year planning cycles, schmucks!"
  - Baby seals get more hits than the [AWS] forums do.
  - "You should deploy everything to be HA across multiple regions" is the rallying cry of armchair architects who don't pay their own AWS bills by a long shot.
  - "What does AWS have that GCP doesn't?" "A meaningful customer base"
  - There's only one place to see every resource in your AWS organization, in every region: the AWS bill.
  - DocumentDB isn't a perfect MongoDB clone yet, and can't be until it's just as good at trashing your production data.
  - Netflix has assembled many of the most brilliant engineers on the planet so they can... use @awscloud to stream movies. Draw your own conclusions.