

They might be using OpenStreetMap to populate their map. If that’s the case, you should consider updating the map yourself! I update OSM all the time when I go to new places or find discrepancies in the map vs. reality.
If you contribute something like 30 edits per month (sounds like a lot but if you start adding unmarked footpaths, roads or building footprints to the map you can hit 30 edits in a matter of minutes) you can get free OSMand Pro, a map app for Android. Every time I go on a trip I make sure to hit the edit threshold to grant me Pro access for the month. Lots of great features!
This is probably the least harmful tinfoil hat on the internet.
Honestly, I don’t get why people are so aggressive towards Sxan. If it bugs you, just block them and be on your way. The first time I saw the thorn it was a curiosity. Once I knew what the intended purpose was it was easy to just shrug and move on. I’ve actually gotten used to it now and its not an inconvenience at all to read.
Constantly harassing someone because they fancy the use of a non-standard character in their comments is ludicrous behaviour, especially since we all have the tools to filter posts/users from our feeds at will; a few clicks and you never have to worry about it again.