cheese·cake
n.
1. A cake made of sweetened cottage cheese or cream cheese, eggs, milk, sugar, and flavorings.
2. Informal. Photographs of minimally attired women.
It appears that our reporting friend likes to look up alternate definitions of common-day words and use them at any given chance.
in·for·mal
adj.
1. Not formal or ceremonious; casual: an informal gathering of friends; a relaxed, informal manner.
2. Not being in accord with prescribed regulations or forms; unofficial: an informal agreement.
3. Suited for everyday wear or use: informal clothes.
4. Being more appropriate for use in the spoken language than in the written language.
Apparently this "reporter" missed the part of that definition partaining to written language. Am I being pedantic? Absolutely. Their reporting style is asinine and unethical.
Demosthenes