If someone wants to find out who you are and where you live, it’s quite easy. If you have a super common name, it’s a little tougher. I research people as part of my job and it’s pretty amazing how much public information is out there unless you’re very diligent in keeping it private (such as putting your house in the name of an LLC or Trust).
I’m not defending Strava, but staying off of it will not keep you safe.