This is the right answer, I recall studying for the solutions architect professional certification and reading this countless times: outages will happen and you should plan for them by using multi-region if you care about downtime.
It's not AWS fault here, it's the companies', which assume that it will never be down. In-house servers also have outages, it's a very naive assumption to think that it'd be all better if all of those services were using their own servers.
Facebook doesn't use AWS and they were down for several hours a couple weeks ago, and that's because they have way better engineers than the average company, working on their infrastructure, exclusively.
It's not AWS fault here, it's the companies', which assume that it will never be down. In-house servers also have outages, it's a very naive assumption to think that it'd be all better if all of those services were using their own servers.
Facebook doesn't use AWS and they were down for several hours a couple weeks ago, and that's because they have way better engineers than the average company, working on their infrastructure, exclusively.