Reasonably interesting interview, even if many of the answers were pretty uninformative. As some of the /.otters commented, I would have expected, or at least liked to see some more straight-up, technical answers for the /. crowd. Also, why did it take him a year to answer?
As for the plugin support, well this was a year ago, before Opera 9, and Opera 9 seemed to make no movement toward better plugin support (that I'm aware of). So unless it's in Opera 10 I'd say that was just lip service, sadly.