So if it's so common with anti-Russian people in Crimea, how come we haven't seen any demonstrations, any uprising, and no stories with people sobbing about how terrible they feel about being forced into Russian citizenship?

All we can see are people celebrating and generally being positive. Nobody can force people to go out in the street, wave flags, smile and look happy.

We all know that Western media would LOVE to run a a story about somebody on Crimea who had been mistreated by "Putin" or had some form of legitimate complaint.

I've seen nothing, and assume the reason is that there is nothing to report.

Crimea is open for journalists, anybody from there can blog or post on the internet. Yet there seem to be no complaints coming from there.

I'm sure there IS someone, who's genuinely unhappy about it on principle, i.e. they don't like Russia, Putin or whatever. But other than "I don't agree with the majority", there don't seem to be much to complain about.

I.e. if there had been negative events happening we would see:

I.e. "Gays in Crimea persecuted" or "Grandmother 85 is forced to abandon her house by Russian military" or "Ukrainian speakers terrorised in Sevastopol", "Crimean blogger interrogated by Police about anti-Russia comments"

....or something like that. But nothing like this is happening.
I think there is every reason to believe that the figures from the referendum were correct and a very large majority of the population are happy about it.

Otherwise I'd like to see a story of somebody who is legitimately unhappy for a good reason. I.e., their life is worse today, because of Crimea's annexation to Russia.

I do get that the Crimean Tatars were not 100% happy with events, and that most of them did not vote. A minority of 10-15% - and I imagine there are lots of mixed marriages etc.
But in all honesty, they are no more Ukrainian than they are Russian; there are other Tatars in Russia, who are fine, as Russian citizens. Russia seems genuinely committed to making sure that their interests are being assured. They won't be any worse off. Can understand that they have historical grievances relating to the way they were treated by Stalin etc. But that is history and at some point you have to move on. RU is not the same country that mistreated them, and Stalin mistreated lots of people not just them. Plus, nobody is stopping them from keeping their UA citizenship, alternatively leaving the peninsula. Really, I don't see any reason to get worked up about their situation.