I see that as fact. Because if the blog-post and the article should be fakes - it's a psycho war.
If both should be true - it's a psycho war.
If just one should be true and the other fake - psycho war.
There will always be opportunists in situations like this. Some troll the forums, some put it into more "refined" blog posts. The markets are not THAT stupid, although it might have a small effect sufficient for the "blogger" to cash in on a short (as an example).
In any case - this one is quite lame. No substance, anonymous group nobody has ever heard of before.
The question regarding the blog-post is more: Is it just one guy who holds ETC or wants to short ETH and tries to have impact on the market. If yes, there is most likely no problem.
If ETC should be behind the post, it would show intense intention to damage ETH.
I believe now it's just one guy. Reason: https://bitflikz.com/products/short-sleeve-mens-t-shirt
Doubtful that ETC would be that stupid.
And it shows some intention to make money with "everything".
Why do people continually try to centralize a decentralized concept? There is No one that speaks for a decentralized blockchain, that is the entire issue. That is the reason that ETC Exists at all!!!
Some people just cannot grasp this.