This sort of concern has always puzzled me - I can go searching county deed records and see where I've moved. I think that can be done with voter records as well, and maybe DMV. Your address isn't really private in the first place, and nothing will save you from a person camping out nearby your house. If someone wants to stalk you, Strava will at most make it a little easier, but it's not like even staying completely off Strava makes your address a secret.