I can't see that bill gates, Elon musk and every cryptocurrency channel using the same manager. This looks like something closer to a Twitter hack than an intermediary, especially with the the reposting after deletion.

No way, it's way too widepread and would be shut down by now.

Elon Musk, Barack Obama and Wiz Khalifa just tweeted the scam again this very minute, more than an hour since it started. This is backend access, Twitter can't figure out how to shut it down.

But when you post a tweet via api, the tweet will include the app's name at the bottom? The screenshot in the article has "Twitter Web App" at the bottom.

Do that many accounts use the same social media manager?