You're intentionally baiting the subject and trying to stir the pot. As you've made perfectly clear, we're all entitled to our opinions, but at this point, bringing it up in multiple posts on this thread, it's pretty clear you're trolling for an argument. It's telling that you compare it to picking one's nose, rather than blowing one's nose. One can be done politely and isn't a big deal to most people. The other is almost universally considered pretty gross. It's clear you went out of your way to shake things up.
Where you see an excretion, I personally see it as having more to do with eating publicly than farting. If you think it's distasteful, that's fine. You've made that very clear. I don't find it so. Others clearly don't, either.
Again, personally, the only thing that raised an eyebrow for me was the age of the baby. I think that, in general, babies are a little old for formula or nursing when they can ask to be fed in complete sentences.