There are a lot of different products because in advanced economies people have a lot of disposable income and credit is cheap. As such, consumer good proliferate.

It isn't a new observation (same way you get engineers to build weapons), but I'm laying it out more because I think it encourages engineers building stuff to understand how the data they are collecting to solve problems can also be abused (or how whatever you are making can be abused). Like another commenter said, you can turn off the features but they are less useful. Data is a double edged sword.

If you could actually do something useful with it people would give you the info. Like if you could provide shoe recommendations useful to someone they'd take 20 minutes and take pictures of all the shoes they have. But the state of the art is basically "I see you have brown shoes. Here's 1,000 random brown shoes".