I don't have a "personal vendetta" against Lorde. I haven't shown up at her house or anything...yet. I just think she's a one-hit wonder. The rest of her songs have been weak. She's not an especially gifted singer. She may just be a lucky teenager. It's okay. Rock and pop are full of one-hit wonders.
Also, a zillion acts have had strings of hits from debut albums. It's hardly a rare feat. The Beatles, Guns and Roses, the Beastie Boys, the Cars, Madonna, Van Halen, Boston, Pearl Jam, blah blah blah.