It was almost a requirement to hit certain achievements.

Ingress is/was a wild game, with an avid community but also crazy chalenges, like keeping control of a portal every single day for a full year.

"Guardian" no longer exists, as it was causing (slightly more) toxic play. It was retired in 2018. Very annoyingly, when I was just a few days away from getting the maximum of 150 days.

Thanks for the correction, yes Guardian was "only" 150 consecutive days. I mixed it up with Sojourner which is 360 days, but has no location requirement.