No.

If you make a statement of fact then you need to be able to back it up with objective facts.

If you can’t, then it’s called opinion

And a second asbsolutelyfuckingnot. Why?

Because there is a torrent of utter bullshit posted online every day. The burden to prove it’s bullshit should not be placed on the recipient of the information. Why, again? Because it’s easy to flood everything with bullshit and takes effort to disprove. You cannot allow people to make statements without facing the burden of proving their position, otherwise nobody is going to be checking anything and the bullshitters win.