No, things started a while ago. Lots of people, inside and outside Nokia have been pushing to make a community supported distribution possible. If things change it will be because people communicate in a calm, rational way and collaborate to make change possible, not because someone complained on a message board.
Major feature upgrades aren't quite the same as "support."
Your warranty is still valid, and I'm sure they'll answer customer support calls. Nokia isn't the best in terms of supplying new software releases for old devices, but they're certainly not the worst.
On the other hand, you sent them the wrong message by spending money on an N810 after getting burned when they stopped supporting the 770.
We are the community! You and me. Some of us are stepping up and looking at ways to get Fremantle on the N8x0 devices (hey, maybe some parts will run on the 770 even!). But the more people helping, the better. Nokia gave us the tools to help ourselves this time, and if we don't take advantage of those tools, I don't see this happening again. It's time for the community to step up and prove that supporting Open Source makes sense for a company.
I understand where you're coming from, but it really illustrates a difference in being beholden to a commercial entity (Adobe's Flex) and having the possibility of taking things into your own hands (Nokia's Maemo). When people say "just deal with it" on this board they're (for the most part ) not saying "Shut up and take it," they're saying "Let's fix it!"