They are explicitly adding their information to FB why do they need a button to not share the information? Would the button disable them from checking in and updating their profile?
An E2EE system (e.g. as offered by Apple iCloud). Or a terms of service guarantee. (e.g. Dropbox, Anthropic and 1000 other companies that partition sharable user content from non-support divisions.)
> Would the button disable them from checking in and updating their profile?
When you post a check in, your relationship status, your pictures without setting your sharing preferences and update your profile - you are specifically doing with the intention to share. WhatsApp is E2E encrypted
You’re arguing that people care about their privacy when they are explicitly sharing private information above what is needed to participate in FB.
You are completely wrong and your argument is illogical. People may not know that FB is making a profile of you based on your behavior. But logically, if I add to my profile that my favorite site is “grandma-midget-porn.com” [1], that I care that people don’t know I like senior citizen midgets
Because it is irrelevant to whether people are purposefully explicitly sharing their likes and dislikes, and other information to let FB know more about them.
> Would the button disable them from checking in and updating their profile?
No.