Different risks. I'd say you were extremely unlikely to get listeria from McDonalds - the very industrial standardisation that makes it bland also makes it processes out the pathogens. Acute risks vs the long term.
Is it? Junk food is the "thoughtless", easy, popular option while raw milk is very much something you have to seek out, unless you live on or next to a dairy farm. And not just seek out, you have to have been advertised to.
