I still think it's not Apple's choice, it's the lack (at present) of a useful Flash player that runs on OS X on ARM. Adobe may or may not be a culprit in the delay. The fact that Apple started with "maybe" suggests that work was being done. I'm betting it still is, and will arrive by software update. Just not at launch.
By Apple's own choice, delivering the "real Interent," I'm sure they DO want Flash support. It's not like they're trying to replace Flash with something else: QuickTime does not have the authoring tools or massive developer base that Flash has.
Do not mix the marketing message with the engineering one, and NEVER underestimate apple's keen use of "weasel words"