I mean, it may be true in practice that most S3 workloads are throughput oriented and unconcerned with latency.
But if you look at https://aws.amazon.com/s3/ it says things like:
"Object storage built to retrieve any amount of data from anywhere"
"any amount of data for virtually any use case"
"S3 delivers the resiliency, flexibility, latency, and throughput, to ensure storage never limits performance"
So if S3 is not intended for low-latency applications, the marketing team haven't gotten the message :)
lol I think the only reason you're being downvoted is because the common belief at HN is, "of course marketing is lying and/or doesn't know what they're talking about."
Personally I think you have a point.
I didn’t downvote but s3 does have low latency offerings (express). Which has reasonable latency compared to EFS iirc. I’d be shocked if it was as popular as the other higher latency s3 tiers though.