[AntiImperialist]

> If people had been saying it was definitely real then a skeptical warning that there wasn't any evidence to prove that might not have been a bad idea.

You're completely wrong on this one. Not only did physicists believe in the existence of Higgs boson, they built upon the premise that it existed for all those years.

Sometimes evidence is not always possible to present or just not practical. Also, there are various degrees of what kind of evidence is acceptable. The evidence required to publish a paper in a scientific journal is different from what is required to make a legal case or report in a magazine. So, with a premise of "requiring evidence", you can be very flexible in terms of what you allow and don't... which is what Twitter seems to be doing.