hmm, is there XKCD for "might refer you to XKCD $number" ?
Imagine someone posting an extremely well written and insightful postmortem of an outage. It would show advanced and accurate usage of all kinds of tools to get to the bottom of the outage. It would be extremely useful reading for anyone investigating a similar outage, but the outage never actually occurred.
Now you have both ground truth accuracy and misleading fiction at the same time. Whether or not that makes the post useful depends entirely on the conclusions you're drawing from it.
It matters a lot. Spam is easy to recognize and e.g. my current email client filters out dozens to hundreds of spam mails per day without any false positives. If you cannot distinguish spam from normal posts, this could even cause democracy to break. Unfortunately, there are strong anti-democratic forces in the world who want this to happen. In my humble opinion, this is the biggest threat to humanity right now because (unlike other threats) it's not hypothetical, it's going to happen.
You can distinguish however online accounts from real people and bots. That's easy and so cheap, i consider it it, essentially free. Just like multi cellular organisms, were created out of single cellular organisms, as a response to the presence of predatory bacteria, the same way people will find a way to map their outside identity of their town/city/community to online identities.
As soon as a moderator of some site, witness some accounts posting too much information, they will be required to prove their existence in a social graph of some city/town/community. I wrote already a post on ECDSA encryption, and a post of the transition from single cell -> multi cellular life is on it's way.
As if there is any democracy in the countries that claim to have democracy. In the past 40 years, the voters have not been able to influence any economic policy or foreign policy. 74% Americans said to Gallup that they thought their votes absolutely did not change anything and they did not matter even as early as the second Bush administration...
(1) getting better is bad because you can enter the two words into Bing Chat or whatever to generate the same shit yourself, so you won't need them anyway, they only get in the way when you want to look for actual human-generated/curated content.
(2) getting better is obviously bad. Imagine most user-generated content turning into Quora-style ads or Amazon fake reviews, except with eloquence and bullshit knobs turned to 120%. Everything you read is coherent, convincing prose, you just don't know whether they're 100% false.