They're dangerous if you don't have an efficient way to pacify them, which we thankfully do. In the modern developed world, they can pick up virtual AK-47s in Fortnite or join a League of Legends team instead, which is much less destabilizing.
Anecdotally, from poor people, people would rather be physically healthy and have a place to live, even if they are unfulfilled, than be malnourished or suffer from untreated chronic illness and likely be unfulfilled anyway.
They don't and shouldn't. But they should and can detect if a pending update will break your device, or downgrade more gracefully when their software runs on hardware that is missing some expected features that were previously unused.
If you disagree with the justification, it would be better to explain that position. Otherwise it appears that you are starting from the premise that this is bad so any justification presented must necessarily be dismissed regardless of validity.
You don't have to know what "SEO" means in order to fend off a smear campaign or simply bad journalism. You may not have to know what SEO means in order to get your defense sorted higher in search engine results than the slander, but you have to do it because you set SEO as your goal yourself.
Is a mugshot of your DUI arrest (but no conviction) 20 years ago the only remotely notable thing you've ever done in your life? If so, why shouldn't it be the first result of a search for your name? If not, why is it the first result?
A nice thought to have, but it does make history less useful when you have so many constantly attempting to append bad data. Eventually you fork the blockchain and get multiple histories.
People want government to do its job properly and to not overreach that. It's no more surreal than people here wanting net neutrality enforced through government regulation while blacking out their sites to protest SOPA.
If you don't have an objective metric like that, these bureaucrats don't magically learn how to make good decisions. They just overpay their friends instead. These bidding systems are a symptom of bad decision makers, not their cause.
If someone posted that on reddit, especially /r/China, there's practically no chance he/she is actually Chinese. /r/China is full of English-speaking immigrants who hate China.
Those who put resources into looking for security vulnerabilities find a lot. Of those groups, most have better things to do with those vulnerabilities than report them publicly. Who else is Google even competing against here?
Firstly, people already know politicians lie. Nobody is going to care about your video in the first place.
Secondly, your analogy is wrong. The new hypothetical you present is equivalent to the old model where you are all giving verbal accounts and his staffers lied. If you are going to compare to an old-tech scenario where you one-up them with a more detailed recording than they have, you need to do the same with new technology to keep the comparison accurate.
Thirdly, why aren't you the liar?
Fourthly, you can always go one level up. Show the footage of them constructing doctored footage.
At that point there is no such thing as identifying faked videos. Instead you'd rely on the abundance of independent videos and see how consistent they are. Generating a lot of them doesn't do you any good unless you can insert them into the black boxes of the 3 planes and 40 cars in the area, the databases of all the drone operators, the internal storage of all the nearby smartphones, etc.
I am sure you can do that. The hard part would be building consistent histories to back up those uploads. An upload from my facebook account, verified by other incidental data like GPS tracking on my personal phone, would more merit treatment as an independent corroboration, whereas a random reddit upload from a throwaway account would not.
And the real verification would come from ultra-high-res captures from drone cams, self-driving car cams, traffic cams, etc that are constantly running and recording everything, so that you can't realistically fake soemthing without simultaneously compromising uber, amazon, walmart, etc.
The presence of one source can be easily dismissed, but if you have 500 independent sources that produce video of the same event from their own angles and timespans in an interconsistent way, it's far more likely that the recorded event happened as opposed to all of these different sources lying.