For the good reason that she's making cool stuff in joyful colours with careful, detailed photo tutorials and patterns, all generously free. Neat ripple blanket, Blooming flower cushion, blankets and flowers and goodness, oh my. She's started trends and encouraged others and is altogether admirable. Modern crochet with a nod at the past and an eye to the present. Crochet for creativity and to keep her family warm.
(And she writes crochet instructions in UK terminology, o happiness!)
She's on Ravelry, and there are also Rav groups of Lucy/Attic24 enthusiasts.
Note: links are in UK crochet terminology.