Eliezer obviously agrees with you, but... Hermione doesn't sound silly at all to me. Okay, explicitly believing that sufficient lack of sympathy makes one an inherently bad person is silly, but no sillier than Dumbledore's deathism. And the jealousy is completely justified. Harry encouraged the rivalry, then promised they would study magic together - that they'd be the team to crack it, the only researchers in the wizarding world, not that she could lend a hand as human library. Of course they're supposed to be Science Monogamous. And it's not like he's met another great scientist; he's going out of his way to teach science to someone who hated her.