I like your rational thinking. But I don't recall Lion + Minis/Airs being a disaster last year.
That's one reason why Apple tends to learn slowly on these issues. The cock-up aspects fade with time. 10 Months later many users will forget.
Skip to the end of the Lion forums.
https://forums.macrumors.com/forums/152/&order=desc&page=143
If go back a page or two, there are "Slow download", "error creating recovery partition". The folks who hard incompatible AFP NAS boxes probably remember. Many folks who needed Active Directory connectivity had a serious bug all the way up until 10.7.2. Nevermind the "World is going to end there is no Rosetta" crowd.
It is not quite the disaster as when they crashed mobile-me out of the gate, but it isn't silky smooth either. I'm sure the support center's phone lines light up as users find numerous ways to shoot themselves in the foot getting this installed. It is better if the phone lines , bug queues , and Genius bars flush that stuff out before roll out a new box
Most of this is just normal major number upgrade level of issues. A fair amount is even known bugs. They are just bugs that impact a much larger group when released for general usage than when in the relatively minute beta environment Apple tests into.
Because the new boxes can also pop up issues of their own. (e.g., the Thunderbolt drivers for the then new TB Ethernet adapter screwed up some macs upon initial release. )
----------
It wasn't. .... Ample stock of base models appeared on location, and CTOs drop-shipped straight from Shenzhen. Point of fact, it was a lot less logistically troublesome than this year's rMBP launch, based on the ship date ranges people were seeing.
Shipping boxes is totally outsourced at Apple. That isn't the issue. The issue is Apple being responsive in doing the services that they don't outsource.
It is also about how Apple's QA. There have been more than a few security update 1.1 , driver ABC update 1.1 , etc. where Apple ships.... substantive bugs pop up for a signficant number of users and Apple has to hustle out a new fix of a fix.