So does Nikon. The only difference is that Nikon divides their Service Advisories and firmware updates onto two separate pages. Canon does not.
Current Firmware downloads available for Nikon products
Service Advisories
I went to your links and noticed a total of 10 service advisories for Nikon products--dating back to the N55 film camera, in the year 2005. Most are for CoolPix cameras: there are FOUR CoolPIx service advisories listed. The D5000 was the last Nikon SLR with a service advisory, back in August of 2009. Another Nikon service recall out of the 10 is for the
CL-L2 Ballistic Nylon Soft Lens Case, and two were battery recalls, one from 2005, the other from April of 2012. Service Advisories
Firmware Updates are listed separately on Nikon's site, yes. That's because a firmware update is not a Service Advisory. Canon has over 60 F&^(-ups listed...not counting FIRMWARE updates. Is it terribly distressing when the spin you pout out [sic] falls flat, Ty?