Good job being skeptical, it's a good first instinct to have with any media. However, reading the actual article is a good choice as well.

- They link to several of the accounts (now suspended) in the article. - The geolocation was easily spoofed with a VPN, as stated in the article. - They never claim these account have any significant standing, only that they have "thousands of followers", likely in aggregate.

The news here is that they were previously known to be Iranian-linked. This blackout is further evidence, because they all stopped posting when Iran went offline.