Why do articles like this always overlook the key scientific and historical issues? If there's life on Europa, and if it is not based on DNA, that would mean E

Why do articles like this always overlook the key scientific and historical issues? If there's life on Europa, and if it is not based on DNA, that would mean Europan life evolved along a separate path from ours. That would lend support to the idea that life is common in the universe. If Europa's hypothetical life was based on DNA, it would lend support to the "panspermia" idea, because it's hard to imagine how Earth's life could get to Europa, implying that Earth's life, and Europa's life, both arose somewhere else and traveled to separate destinations. There are several other possibilities, none of which are discussed in the article.