That would be ideal solution but for someone that cycles there is no alternative social app. There are great alternatives for tracking your fitness, progress, routes and stats but from social perspective everyone is using Strava. Sometimes you don’t have a choice as some companies using it exclusively to track group efforts and if you want to take part of charity events this is it. The same goes with virtual events where group is tracked via their activities in Strava towards some goal (usually climbing or distance).
There was another issue few weeks back that allowed researches to use API’s to get someones precise route coordinates even when map visibility settings where disabled. The only way to prevent someone from getting your location is not to record it (start recording further away from your home).
Since lemmy instance can be deployed and federated by anyone it’s fair to assume that some bad actors are already doing it. With some scripting or machine learning you could determine user habits and subscribed feeds. Based on other posts the subscription information (activitypub) have also upvotes and downvotes which could be used to gauge one sentiment/political affiliations. I think the only way to circumvent this is to have disposable accounts maybe with some script to to rest scribe to topics of interest every time you have new account. Then don’t use moderator account for anything other than moderating specific sub.