You're criticizing a joke. Worse, you seem to be aware that you're criticizing a joke, and still went through with it.
I also disagree with your premise: Recall by an open-source entity would have many of the same problems. The threat model for most people isn't that Microsoft might tailor ads to their interests. The threat model is that you're giving that ransomware gang, or an abusive spouse, a new tool with devastating capabilities.
Even for people legitimately worried about law enforcement / the government, the same applies. You're gifting your adversary a database of everything you've ever done that understands context and can literally be queried for "just show me the bad things". It's slightly better if it lives locally rather than in the cloud, but it can be used to nab you just the same.
You say it as if criticizing a joke is obviously something not to do for some reason? It is not like the joke does not imply something the author tries to say, otherwise it would not be on the front page. That aside, you overstate the difference to what we have today dramatically. Your browser history is already that and look at what controls firefox built on top to let you manage it. You can pause it, limit it, exclude pages etc. An adversary can root your pc and enable key logger and screen recording if they can break into an encrypted database, the delta to what adversaries already have is not that big, but the unlock for users and agents is quite big.
I also disagree with your premise: Recall by an open-source entity would have many of the same problems. The threat model for most people isn't that Microsoft might tailor ads to their interests. The threat model is that you're giving that ransomware gang, or an abusive spouse, a new tool with devastating capabilities.
Even for people legitimately worried about law enforcement / the government, the same applies. You're gifting your adversary a database of everything you've ever done that understands context and can literally be queried for "just show me the bad things". It's slightly better if it lives locally rather than in the cloud, but it can be used to nab you just the same.