Whilst Twitter has someone tweet the occasional gem, it's genuinely few and far between. I honestly feel that the format was great when it was only really programmers who used it (and even then I'm not so sure...) but limiting people to 140 characters, even discounting images and links, means most people can't convey views on most complex issues.
I have an unpopular view, but I'm firmly of the belief that all Twitter did was amplify the voice of celebrities - most of whom have not much to really say, made it easier for abusive speech to be targeted towards individuals and amplified moral outrage. Facebook has as well, but nowhere near as badly as Twitter.
Ironically, sometimes it's been for the better. But for every https://twitter.com/RabbiJason/status/728404847381204993 there is a https://twitter.com/realDonaldTrump/status/24046226568028979...
Sometimes you even get something like this:
https://twitter.com/adriarichards/status/313417655879102464
Edit: like I say, it's an unpopular view! If only someone would tell me why my view is wrong or unreasonable. In 140 characters...
Edit 2: It's suddenly occurred to me that if someone was able to give a highly convincing argument in favour of Twitter's ability to convey all complex arguments and views and did so with a lengthy response, but there was no way of distilling the message to 140 characters... would that invalidate it?