Firmware updates are good. They can patch security issues and they can improve different aspects of the device. The security being the best plus obviously.
Wholeheartedly agree that there is no reason for a company like Samsung to track your every move despite you paying them hundreds for said devive. I'd be very surprised if they don't make a hefty profit from such devices. So why then, do they need to track us in addition to making us fork over our money.
I understand Google tracking us. I don't agree with it, but I understand it. Same with Facebook. But Samsung? Apple? No. They're even going to certain lengths to prevent you from fully enjoying your devices (such locked bootloader, making it hard to repair etc).