no, that's not all that needs to be said. it is good to know, however.
People that have bought into an OS/device tend to apologize for it, only being truly objective and honest months/years later. They often won't know what they're missing because they've never experienced anything else. In this same way, many Nintendo owners apologized for Nintendo's online services...but many hadn't experienced better to get used to a different level of expectation.
In reality, people who've bought Windows Phone to date have had a decidedly inferior 3rd party software (apps) and hardware (cases, car and receiver compatibility, sound docks, etc.) experience. The OS and core apps have been decidedly different and enjoyable in their own right, but neither computers nor smartphones experiences stop where the default apps end. The average iPhone owners has over 100 apps installed last I checked. The app stores matter.
What matters for many of us is what kind of experience those of us coming from solutions that may have had more diversity and support can expect if we come to WP8. What things will feel like steps up? What things will feel like clear steps down...and when will there be parity in those weaker areas (like 3rd party software)?
Also, what kind of OS update support can we expect for the 920? Or, how many iterations of WP can we expect? I know the 900 owners are being left in the dust IIRC with WP8. Will the 920 be able to run next year's WP OS update? Because the iPhone 5 will probably be up to date until late 2015 at least...and flagship Android phones get updates sooner or later.
So no, it's not just enough for owners to love what they have.