If someone stabs you, and you have enough time to post about it on the internet, for sure you have time to take a few pictures of it. Me, personally, it would prob. be the first thing I would do after making myself safe, so I have evidence to show.

But who knows, the only safe bet is not to believe stuff you read on the internet. ¯\_(ツ)_/¯

Edit: Sorry for being rational, but there's no evidence on either side.