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
I feel it is a horrid thing and absolutely messed up. It should never ever have been used or addressed as something allowed to happen. Also it was very racist obviously. It shouldn't happen ever again.
Comic books are worthwile to read by everyone because they are another art form. Whether a book has photos, small print, boxes, whatever, they all have a meaning. The stereotype that comics book are just for kids or are only superhero related is outdated and leaves the wonderful world seeming closed off to so many.