browser.ml.chat.enabled set to false
browser.ml.chat.menu set to false
browser.ml.chat.page set to false
browser.ml.chat.page.footerBadge set to false
browser.ml.chat.page.menuBadge set to false
browser.ml.chat.shortcuts set to false
browser.ml.chat.sidebar set to false
browser.ml.enable set to false
browser.ml.linkPreview.enabled set to false
browser.ml.pageAssist.enabled set to false
browser.tabs.groups.smart.enabled set to false
browser.tabs.groups.smart.userEnable set to false
extensions.ml.enabled set to false
That should do it.
Can also use the user config override if you want to do it without having to do that every time you install FF somewhere new (put user.js in the root folder of your firefox profile).
At this point, it's easier to start with a privacy-focused, AI-free fork, like LibreWolf, and turn some stuff on to stop it breaking sites that have privacy-hostile workings, like disabling that LibreWolf exclusive fingerprinting protection that many sites don't play nice with.
Can also use the user config override if you want to do it without having to do that every time you install FF somewhere new (put user.js in the root folder of your firefox profile).
It's a garbage feature that no one appears to have asked for.