What's wrong with this? Apple are openly providing this information for you to view - rather than others who don't even warn the user. Plus, it's improving their services which you more than likely need.
On all my devices this was defaulted off. I didn't turn it on via settings screen, but in response to an early alert box asking if OK to keep track of usual locations to help compute travel times. Agreeing turned this on.
Why complain? You can opt out.