Wikipedia

Problem is, that's not an opinion but reality. The mass collection, analysis and sale of data points IS happening and the consequences are severe. Ignoring it or talking it down will not make it go away. Let me give you a few examples on how your data is used:

Data brokers are selling this data to anyone who pays.

• Price gouging: Your location data and your shopping habits are used to determine if you are living in a wealthy neighborhood or if you are shopping expensive things. Based on that data you pay more when shopping online

• Your entire phone contacts which you willingly gave away to a messenger app might have been leaked and/or sold. Everyone who pays can now identify who you have contact with or had contact in the past. If one of them is on the government's radar for whatever reason, so are you now. Expect visitors.

• Your period tracking app shows that you're late / location data shows you went to an abortion clinic in another US state. Expect visitors.

• Your fancy ring security camera is being accessed without your consent. Who is that brown-skinned person at your doorstep every few days? Might be an illegal immigrant. Expect visitors.

• One of the games on your phone picks up your live location data and sells it. You might have wondered why the game needs location permission when installing it but after all, how bad can it be...

• Insurances, medical or otherwise buy your data to determine if they want to insure you at all and how much it will cost you. Did you not read your fitness tracker's TOS?

• Criminals can use your data for spear phishing/spam. This works like a regular phishing attack, but is customized to you personally to fit to what they know about you.

• You have googled a specific search term out of curiosity. This triggered a monitoring software and is now reported to the authorities.

I could go on, but I guess you get the picture. All this shit is happening already. Its about time to take it seriously.