Rereading Jobs' letter from years ago, basically all of it stands solid.
https://www.apple.com/hotnews/thoughts-on-flash/
Remember when basically everyone was using flash to play video? Would we really be in a better place if that had continued?
(The one thing that doesn't hold up imo was the desire to not allow native apps using 3rd party intermediate APIs. Tons of apps are made that way now, and it's fine. Jobs' worry about hurting the platform because of the 3rd-parties not picking up the latest native APIs mostly hasn't come to pass, because iOS is so dominant that there's a strong competitive advantage/drive to quickly adopt new stuff. But it was probably a reasonable worry at the time.)