I would consider Rakest and his grandfather to be nature lovers because when they planted the tree they became attached by watching it grow so they fell in love
hope this helps:)
It could possible be ironic because the rest of the world was technically already "discovered", but just not by the Europeans specifically. Therefore it is ironic, simply because they are Naive
A non-positive quality would be that many blogs try to market something, but they don't always try to present something.