He's referring to the Shugart bus, which was used for almost all floppy disk drives (Apple and Commodore being the great exceptions), regardless of format. That absolutely spoke not against 3.5" floppies, which Sony released quite a number of years earlier.

Funny that he leaves out Atari, which managed to release in spring of '85 a system with 3.5" FDD to a comparable price.

Don't know why he felt the need to justify their decision 40 years later and then still just emit phrases from marketing.