Even @TheAnonymouseJoker@lemmy.ml gives it backlash despite being a moderator of Lemmy’s biggest privacy community. A quote here: “grapheneOS trolls are downvoting every single post and comment of mine, and committing vote manipulation on Lemmy. They are using 5-6 accounts.” That was in response to downvotes on a comment posted in the c/WorldNews community, which is entirely unrelated to technology.
It seems to me that you might be confusing things: You say that people hate the OS but share a comment complaining about the community of users/fans, not about the OS.
I have never used GrapheneOS and cannot comment on the OS, but I have seen some users in different communities commenting that GrapheneOS is the only valid alternative OS and discrediting any other OS. It becomes tiring pretty fast.
Open Tracks allows exporting in either KMZ (default), KML or GPX format. Go to Settings, tap on “Import and Export” and there look, towards the end, for the entry “Export/sharing file format”.