I don't use it but I've set it up for others and I definitely remember some part of the setup where I was given an option with regards to sending personal data

I don't use it but I've set it up for others and I definitely remember some part of the setup where I was given an option with regards to sending personal data and the description for choosing no said something like "You wont see less advertising, they just wont be tailored to you." I'm sure someone who sets up Windows 10 more regularly could explain what this is. On the same machine I set up Microsoft Office and it wont stop doing popups advertising their team/collaboration product. This is on Windows 10 Pro and with their top tier version of office as well I believe. So paying more doesn't get rid of the ads.