Exploring dimensions in minecells may need diamond armors, which means it's something for late game. Then it could be kinda useless if it shows every time on player death, even if they've never visted those dimensions.

The HUD has been removed from the latest 1.20.1 releases. Might still be present in 1.19.2, I'll check on it since it is unused anyway and remove it there too when it's time to backport more fixes