I agree even though I use ginormous in normal conversation. In the right context it is fine, I just don't think this is the right context.

I also find it hard to take an article seriously when its volume comparison employs "Olympic-sized swimming pools". I think the fraction of people who have a clear enough mental idea of the dimensions or volume of an Olympic-sized swimming pool is pretty small relative to the articles readership, which I hope they measure realistically under the assumption that the number of readers will always be close to half the number of eyeballs on the page. Otherwise they would be inflating readership and that would be misleading.