Since Macbook ‘13, Apple uses SSD devices which connect at PCI-e speed (M.2) vs most PC which connect at SATA rates
Critical matching is required to make it work but it is MUCH better than SATA
On the Macbooks that are Macbook Air’s, the newer ones dropped the “Air” name. They still sell non-Air Macbooks which use mechanical drives on SATA, unless one pays extra for the SSD option. But you’re right, much faster speed now.