Aye. I still do not see the advantage of it.
Filesystems access a range of blocks (e.g. a filesystem on a partition ranging from logical sector 100 till logical sector 300 can access 200 sectors.
ON a HDD those sectors are usually nummber 100 till 299 and most of them are sequential.
Most, as in not all (e.g. bad sector remapping on SCSI, SAS and SATA drives)
On a SSD there is no guarantee that they are sequential at all.