Elon is focusing on the mission by acquiring Twitter, you are just slow to see how valuable it is to the mission. And that's coming from someone who despises Twitter and doesn't even have a Twitter account. You say you want the focus to be on the mission, but, before you can say how to most effectively focus on the mission, it is necessary to understand the biggest challenges standing in the way of completing the mission. The mission is not so much a technical challenge, but a social and political one. Think about that...
Personally, I hope all the people blind enough to think Twitter is a worthless distraction would use that as a reason to sell all their TSLA. They will have quite a shock when they finally learn that Elon actually did understand the mission, it's challenges, and how to most quickly solve it. And was willing to put his most valuable resource, his time, towards solving it, and all of his own personal assets. We don't need people who want to direct the mission when they have demonstrated they don't even understand the challenges facing the mission by being so narrowly focused on making money in the short-term, at the expense of all else. Elon has the big picture and it's baffling to me why some people don't understand that.