For those who do not know, Flash is commonly found in just about any website you visit. You may not notice it, but it's actually helping you experience the web in a richer way. For instance, the video player below uses Flash technology.
HyperCard and Flash
Further in the interview he says HyperCard was even more popular than Flash. Heck I don't even know what that is, and even the host Walter Mossberg laughed at such claim. It was right for Apple to 'axe' HyperCard for it seemed like an abysmal attempt for a technology. As for Flash, I think it's a big mistake.
Flash is still in use
With the advent of HTML5, old Flash is waning. But the decision of Apple to completely devoid their recent products of Flash is immature, as the technology is still widely used. Jobs did mention his company has the tradition of transitioning from an old technology to the next but they just do it in an untimely manner.
As to why I want Flash remain in action is because I use it in programming and so far I've yet to see an example made in HTML5 that does a better job than Flash.