Optics. Well, that and his health might make it necessary. The deep state plan I’m assuming is in effect right now goes something like this:

Step one: Install Joe, immediately have him start doing a bunch of things that they really want, but that will rile everyone up. That’s the part we’re in now.

Step Two: once Joe’s gotten all the overreach he can, and started running out the last bits of his goodwill, have him retire (or get ousted) because of his health. Use this to distance the rest of the Democrats from him if necessary (“no wonder Joe’s policy was a little aggressive, he wasn’t all there. He definitely isn’t pulling off a bunch of Democrat goals.”)

Step three: Kamala takes over. Bury any remaining bad press from what “Joe” did under a flurry on “OMG FEMALE BLACK PRESIDENT” and “fresh slate” bullshit.

Step four: Imply that Kampala’s admin doesn’t like some of the most unpopular things Joe did, but her admin does nothing to change those things, and the media never points that out—just like how Obama campaigned on—but then didn’t—scrap gitmo, the Patriot act, get us out of the Middle East, etc.