In the absence of a place where activities can be flagged so they don't erroneously appear in segment leaderboards, this post will function as the place where I report those kinds of activities to Garmin Support who can then - if they choose to - take action.
Following Strava's decision to make their full segments feature paid for, it's now more important than ever that segments on Garmin Connect - a service users of Garmin devices are already paid for through their device investments - becomes a serious contender and challenges Strava's version.
So I'll start posting activities here with data that clearly distorts segment leaderboards. Everyone else should feel free to comment as well.