Mottie doing what Mottie does best, shifting blame anywhere but where it belongs.
"Spreading" does not mean "starting".

And he immediately admitted to the post, explaining that he thought he was sharing News.
Some are daft enough to believe what they read on the internet.
Others are sinister enough to intentionally post known false information.
Some are deceitful enough to misrepresent what they read as something else.
Someone in Pakistan is hardly likely to be up-to-date with News occurring in UK, never mind be ahead of the curve to start false rumours.