It's not amateurish, it was just poor communication in a situation that they've (fortunately) not had to deal with. Which happens from time to time; and good companies recognize their failures and fix them. One thing I know about Amazon from friends who work there is that they don't tolerate failure. They have a culture of owning your mistakes and fixing them; anyone who doesn't buy into that attitude will get fired pretty quickly (and Amazon fires a lot of people.)

It's pretty fucking professional to update the infrastructure that runs half the internet in under 48 hours with no issues. But again, communication can be a problem when you have as many customers as they do.

OP raised some legitimate concerns, but his credibility was undercut by attacking Amazon and calling them names. Ironically, his post was a much more amateur move as his concerns would likely be taken more seriously if he had stuck to the issues and not resorted to name-calling. The essence of professionalism is sticking to the issues at hand and not being sidetracked by extraneous factors.