You don't have any evidence to claiming Blockchain.com has malfunction on 2FA features and also about employees steal user funds in their wallet. All you talking on your article is only about your "presuming or guessing" as you want to blame their employee about your case. As you not bring any evidence in your article, so it's not surprised if Blockchain.com gave a legal threat to you.

However, when you're create that article you're also gave a "threat" to people for not using their service.