Don't worry, the title is pretty misleading actually. The AI won't be "inside" Minecraft at all. In the demo, the player is "sharing their screen" with Copilot from the desktop and It's analyzing what's being shown on it, which just so happens to be a Minecraft window. It's working purely off the same visuals you're getting, there's no extra integration happening behind the scenes and Mojang hasn't added any Copilot code into Minecraft.

The "impressive" part of the demo (and what they explained on stage) is that it doesn't need to be integrated into the game to figure out what's happening on screen, so this should be possible in any game played on Windows. If you're on Linux, you'll never see it.

It’s very likely something like this will only exist in the Bedrock version, so there’s that. And even if they also put it in Java, there’ll be a mod to remove it very, very quickly.

Hopefully the mod community writes an AI removal mod quick. Seems like something they'd do. And I was just about to stand up a server for my friends dangit

Version 1.8 was the best anyway.