Starting December 16, Meta (Facebook, Instagram, WhatsApp) will begin using conversations with its AI chat tools to influence ads and suggested posts. Users in the EU, UK, and South Korea are excluded at launch, but most global users will be affected with no opt-out unless completely avoiding Meta’s AI features.
Source: Meta plans to sell targeted ads based on data in your AI chats | TechCrunch
So they will use Whatsapp data too..
They do use it today, whole WhatsApp acquisition was for meta to push more ads using personal information.
I would recommend watching this series: The Social Dilemma
Short summary from Google:
The Social Dilemma focuses on how big social media companies manipulate users by using algorithms that encourage addiction to their platforms.
I think I am already getting it. So if I visit any shopping site, suddenly in my whatsapp - I see a message. So yeah, browsing history is being monitored and Google seems to share that information. Issue is that a lot of website do not work well with Brave.
If a person does not want ads on WhatsApp, there’s currently no way to fully opt out except by not using Meta AI features. This can feel invasive or frustrating for users who value privacy and dislike targeted ads, as their preferences and emotions may be overlooked by the platform’s policies.
So how do we not use all of these meta Ai features? Is there a particular setting in-app to turn it off?
I’ve kept most e-com sites on aggressive tracker blocking but I too feel somewhere the data is leaking, like I searched a funny but obscure song on my ios device via shazam and searched the same on incognito yt on android, the whole name came in just after typing 3 letters.
Thanks for the movie (documentary name)
There are two more worth watching, alongwith kids, teens
Childhood 2. 0
And other one I am Gen z (cannot find this anywhere, if anyone does let me know, it’s available on prime video but not for India)
Everything you can imagine is being monitored to cater advertising and self growth.
Search, Apps (and there usage pattern), camera, microphone, touch gestures, etc.
Last year was surprisingly shocked that while eating guava in front of laptop immediately got similar results related to guava (out of context) on YouTube (posted in some topic here)
Was shocked so Tested it will some insane things and apparently it was true.
That’s a cool observation. Our digital footprints from searches to app usage and even conversations with AI assistants are increasingly shaping what we see online. It’s impressive technology but also a reminder to stay mindful about the data we share and how it’s used. 
No, you cannot completely stop companies from accessing your privacy, but you can significantly minimize data collection by using various tools.. (still being unsure if they are acquired in future by these companies)