It wouldn't surprise me if a lot of Twitter support people had access to these tools and that they often worked with larger (more valuable) accounts.
It also wouldn't surprise me if some employee had a bad 1:1 and then responded to a spear fish just because they were disgruntled. To take payment for it is particularly stupid.
Of course, could also be something more serious - but if it's really just the BTC piece and the people are dumb enough to talk to the press, it may not be a group of criminal masterminds.
I hope for the employee's sake they have communication that can help the feds catch the BTC group. Either way, an incredibly stupid thing to do on their part and I don't see a good ending for them.
If this turns out to be true, they'd be lucky not to go to prison.