Of course, this is a discussion forum and everyone is free to post and they wish. They can’t post anything false or inflammatory, as I’m sure you’ll appreciate.
That’s why MNHQ exists, to check people are posting things in the spirit of this site.
What Sam has been posting - over several posts - is obviously false and not in the spirit of Mumsnet. I, like many others, have called Sam out for posting this, not least because I’m keen to see where they got this information from, as mis/disinformation is fuelling events such as this one in Golders Green.
I think my stance is entirely reasonable and in keeping with the free posting - as long as it’s polite - which mine has been.