Call Me a Dreamer

While searching for definitions of the term "Urban Fantasy" I came across The Christian Guide to Fantasy. The definitions are . . . slightly skewed, in my opinion.

For example:

Urban Fantasy - A subgenre of Fantasy; the action takes place in this world at this time, with no change in Earth's history, but rather in its dynamics (i.e., physics: usually magic is possible). Another area most often under the influence of secular paganism. [Emphasis mine]

In addition to the statement I highlighted, what bothers me about this "definition" is that it is so vague, it doesn't actually define.