If it was a state actor, they'd definitely want access to elon musk's DMs. He hasn't showed a ton of restraint in social media, and he's the CEO of a rocket company that has done some classified launches. And many of these verified users that were hacked have significant roles internationally, whether in trade like with amazon or politically like biden, or with international aid organizations like gates.
One possibility I can think of is that a state actor, such as China, was investigating state enemies, such as suspected dissidents. They wanted to get the DMs, but also didn't want the general public to catch on. So they set things up so public discourse would be centered around the Bitcoin scam and celebrity hacks.