There's no obligation on anyone to prove anything. However, if you want others to change their behavior, there is a practical advantage to actually bringing evidence to the table. In the absence of evidence, the next best thing is to bring a convincing argument.
People who are working on AI aren't trying to change the behavior of folks who gesture vaguely at ill-specified dangers. Or, at least, they aren't trying very hard. Vague gesturing isn't a very convincing argument, so why would they?
there will be many consequences and its impossible to know for sure what will happen although we can rely on massive change. this is obviously extremely dangerous.
one consequence of the singularity is will be massive change it technology and science. some people arent aware of it but global geopolitics is locked in its current configuration by science, technology, geography, etc. when these things change, borders change. and when borders must change war will happen. it is almost certain that a violent change in science and technology will lead to the largest war that has ever occurred. suddenly, geography, logistics, the price of energy will all have drastically different meanings in a geopolitical context. in short, the global order will disintegrate and even if the new world order were a good one, the transition will be unimaginably grotesque. this is almost an intrinsic consequence of the singularity.
humans will be of little value. if there is war, humans wont contribute much because machines will be much smarter and stronger. the way that war is waged will change. total destruction of food supply chains will no longer be against the interest of all parties. if there is some way of gaining an advantage that involves rendering the planet uninhabitable to humans, on purpose or as a byproduct, then it will implemented. wars wont mean the same thing at that point. they will be much more dangerous.
and all of this is just the first instant. its only the first example. the best way to understand this is to understand that AGI will bring great change, change that is greater and more unpredictable than any change in written history. with so many outcomes, the probability of one that is good for humans is just undeniably very low, especially in light of the fact that we will no longer be the exclusive source of intelligence signal processing like we are now. this does not seem vague at all to me…
Also OPs comment. Sounds too cultish for me.