Simplify the following text for a Grade 12 native English-speaking person.
Original: According to Rowling , to characters for whom wizarding blood purity matters , Lily would be considered `` as loathsome as a Muggle '' , and derogatively referred to as a `` Mudblood '' .
Simplified: According to Rowling , to characters for whom wizarding blood purity matters , Lily would be considered `` as ` bad ' as a Muggle , '' and derogatively referred to as a `` Mudblood '' .