Do you really consider that Jack Dorsey should step in and take some kind of action?
That would be satisfying in some ways, but it's a slippery slope. Who
is supposed to have authority over that handle? Who will Twitter/Jack give it to if they do take action? Bitcoin isn't a corporate brand, so it's not a trademark issue. What terms are being broken?
I think people should just get over it. Satoshi didn't care that bitcoin.com was already taken when he started the project. I feel the same way here.
Satoshi did not care about the Bitcoin.com domain, because Bitcoin.org was better suited to this Open source experiment and it was never a commercial venture for Satoshi.

So, this is why the @Bitcoin handle should also not be an issue for us. The most important thing would be to keep it away from people like Roger Ver, because they like to hijack Bitcoin related domains to confuse people into buying Bitcoin Cash.
