@secretbookcase
I feel so old fashioned reading this thread. Objectively it's a beautiful name and means Bringer of Light. But I'm horrified that there are children with this name. To me, it is just like calling a child Adolf. You may as well call him Devil or Evil. But I'm glad my instinctive view is out of date.
Many think the bible is just a story used to control people. Christianity to me has been an excuse for evil for a long time (not all Christians but lots of organised churches).
So to me Lucifer or Lilith are beautiful names. Many who share my opinion on the church may also think that the names are a symbol of people/traits vilified by the church. Witches, gay people, artists, feminists - all painted as evil by the church but likely just refusing to accept their rules.
So you might think they're saying their baby is evil. They might think they're saying their baby is a representation of freedom, humanity, or a refusal to bow down.