AND THAT'S OKAY!
Most pop singers in general are average singers. It doesn't mean you can't groove to them still.
Pop songs don't really require outstanding vocal talents normally, especially with tech helping them in the studio and even live on stage. It's totally fine to still love their music and their voices.
Technique has objective standards, but taste does not. They don't have to be the best singer or even a particularly good one to be your favorite singer.