They’re also somewhat less flexible in terms of a yummy breakfast, more likely to be GMOs, and a heavily sprayed crop.
China would like to have a word with you. Soy milk in particular is hugely popular for breakfast, and there's about a zillion other ways to eat it too.
Oats are a heavily sprayed crop as well (at least in the US). Glyphosate is also further sprayed on oats as a drying agent. Fortunately Costco sells a brand of glyphosate free oats in bulk.