Honestly as wrong as it sounds, i don't care. Ok i'm a gadget lover and i buy a new phone every 6-8 months, but also because of that i really don't start from the assumption that the device will get full support after +1 year(it's just norm in the SE, Nokia, LG and Samsung world while Nokia is by far best keeping the device alive compared to these).
All the signs where clear and visible even before N900 got announced. There where some reviews i remember at the start of N900 release that where talking a bit too much when they actually didn't know anything about it. I guess that's partly why some are disappointed and i of course understand that because why wouldn't people ask long support for their +500 euros device.

That said i'm sounding like MeeGo isn't coming to N900. We just don't know yet