I recently viewed the National Park Service video for visitors with permits for the White Rim Road.  I was interested to see that it contains a request not to share location data along with the usual leave-no-trace advice.  I would say that's pretty convincing evidence that location sharing causes real headaches for park managers. 

https://www.nps.gov/nps-audiovideo/legacy/cany/DB669631-C286-30C7-044E3F0227860EC1/cany-02-WhiteRimD...