I wish people would stop thinking of S3 as a filesystem because it isn't, and in ways that can cause serious issues. I can't tell you how many questions I get from devs asking "how do I rename a file in S3?" You can't. They're not files. It's not a filesystem. The folders you see on the web interface are just sugar, but if you have only a superficial knowledge of S3, you might be tricked into believing it behaves like a filesystem.
S3 is an eventually-consistent object store. We need to treat it as such.
You're exactly right, but non-techies doesn't distinguish nearly as much - file systems or S3 buckets is just a place to drop stuff and get them later/ or not. In this case, conincidentally, non-tech people have much less barrier to the concept, because they never really understood file system in the first place. They understood it enough to make their own stuff work, and honestly that's good enough for them.
S3 is an eventually-consistent object store. We need to treat it as such.