In the case you are asking in good faith, a) X requires logging in to view most of its content, which means that much of your audience will not see the news because b) much of your audience is not on X, either due to not having social media or have stopped using X due to its degradation to put it generally.

Not bad per se but how much legal weight does it actually carry?

I presume zero.. but nonetheless seems like people will take it as valid anyway.

That can be dangerous I think.