Despite Avril Lavigne's 2015 split from Chad Kroeger, she still has his back. Lavigne came to the defense of Kroeger and his band Nickelback on Thursday after Facebook co-founder Mark Zuckerberg made a joke at the band's expense. The diss came in a YouTube video shared on Tuesday, in which Zuckerberg promotes his home artificial intelligence assistant Jarvis (voiced by Morgan Freeman). "Many people use your products -- some people love them and some people don't.