Twitter's not back. But it's not going anywhere, either. Ask Ezra Klein.

• Twitter has remained sticky under Elon Musk, even for the kinds of people who don't feel great about Elon Musk owning Twitter.
• Joe Biden posting his election drop-out note to Twitter doesn't prove the point.
• But the fact that pundits like Ezra Klein are still there — or were there recently — speaks volumes.

Is Twitter — the company Elon Musk bought for $44 billion and renamed X — back?

On the one hand: Not at all.