Solved
How Do I Track Website Visits if Munchkin Code is Removed Post GDPR
How can we track website visits if the munchkin code is removed when a person doesn't want to be tracked?
I wasn't clear. If I want to track who is visiting website pages in order to score them for the visit is there any other way of doing this if the munchkin code is not there?
You need to keep the promise to not track them, not break the promise by scoring them based on their web activity. 
Anyway, once Munchkin is off, Marketo will not know who they are. That's the idea!
Seriously -- even though in technical terms you could track them by relaying analytics through another service or using LocalStorage or URL tagging instead of cookies proper -- this would be really unethical and, depending on your regulatory environment, illegal.