Every now and then I'll run across a band profile that has adjectives in the lyrical themes box. The most common one that I notice is Anti-Christian instead of Anti-Christianity. I have been changing adjectives to nouns whenever I see them, but I'm starting to wonder if that is strictly necessary. I guess what I'm really asking is does it matter if there are adjectives in the lyrical themes box versus their noun forms, and would changing hundreds of lyrical themes from adjectives to nouns be considered point-whoring?

I would say so. Seems a bit needless trying to enforce a nonexistent standard. There are more constructive ways to spend your time/effort.