So from my cursory research (I am a Debian user for context) it sounds like base mint is based off of Ubuntu and LMDE (Linux Mint Debian Edition) is directly based off of Debian.

The fact that Mint is based on Ubuntu does not necessarily mean that these Ai features will make it in. The Mint maintainers are still in charge of what comes prepackaged in the distro and can remove what they/the community does not like. I'm not sure on their alignment/history so I can't say for sure which way they will go.

If you use LMDE then the Mint maintainers don't need to remove the Ai features wince they were never in there in the first place.

Sorry I can't give you a direct yes or no... And this might be a lot of info that you already knew but hopefully this helps some others too.

So majority of distros you see are typically based off of another, as you’re already aware.

We have Debian based distros such as Linux Mint, Ubuntu, Kali Linux, PopOS and so on, then we have Arch based distros such as Arch Linux, Manjaro, EndeavourOS and so on, and then we got Fedora based distros such Fedora, Nobara, RisiOS.

You get the idea.

Now if Debian were to move a package from unstable to their stable repository all these derivatives will also pick it up however, they can prioritize their own packages from their own repositories over the ones supplied by Debian.

If you’re using Linux Mint cat /etc/apt/sources.list and also check out the files in /etc/apt/sources.list.d and you’ll see the repositories your system pulls from. You can add repo’s there if you want but you have to be cautious that the packages in the repo don’t conflict with the ones already installed, that means ensuring the versions are also supported on your distro.

I’m sure others can give more detail on Arch and Fedora based systems as I am not personally well familiar with those distros and how they store their sources files.