You don’t think this could be caused by the costs of using fancy graphics and fonts? Someone had to create them and they got paid handsomely for the deed, right?
Plain ol’ boldface does the job of attracting attention from the readers. I would bet that in other venues, they still use the fancy fonts, though. When in a mall or driving down the street, the fancy, colorful fonts catch the eye. The whole business is about catching the eye of the prospect.
Looking only at the artistic aspect, it seems like a lazy solution, but there are certainly professionals in the field of advertising and marketing with a plausible justification. Even with any explanation, I will still not like the result