I've been getting a lot of 'suggested' locations and sponsored pop ups in Google Maps the few weeks. I get that it's a 'free' product, but ugh. My GPS while I'm driving down the highway is one of those things that really, really needs to be clutter-free.
It is by no means free tho. They are making lots of money from selling your location data and furthering their market dominance by forcing it on everyone by default
They get that same location data with or without maps. As long as you are using stock android, Google knows exactly where you've been even if you enable airplane mode. They get your position with WiFi networks and other phones around you and store that data with timestamps. Maps doesn't give them any extra data, it simply binds you into their ecosystem.