I’d love to see proof of your claim that they provisioned a hard disk when you requested an SSD, or, at the very least, tests that showed that the IOPS you requested were not delivered. Can you show us the receipts?

Azure using SRE, I call BS. You don’t see underlying storage, it’s mounted as either SCSI or NVMe device as one HD. It’s obviously backed by massive fleet of drives just like EBS.