Yes, I think it's similar product, but we're looking to provide high performance on all dimensions (latency, throughput, and IOPS). I totally agree with you that Elastic Throughput solves this problem, but it can be expensive for many workloads!
Responding here to say that I’d love to hear more about your comparison to FlexFS. In fact, I’d love to see a few of them: FlexFS, MountPoint, etc
Lastly, I couldn’t get the privacy policy to load on your site (I’m on mobile if that helps)