I think there argument against dairy products is the treatment of animals in captivity for those products. I know all this shyt cause I worked with a dikkhead that was a vegan years ago. And yes he was just as annoying as these fakkits we see online and hear about. Only reason I couldn't tell him how I really felt was cause I was his boss. But I did enjoy eating dairy and meat products in front of his bytchass face with a smug look on my face.
You just made me realize something. A lot of these vocal vegans are just miserable and it's mostly to do with the fact they're missing out on all this great food and they know it. There's a reason they try to make all these vegan meat substitutes when there is plenty of regular vegan options in other cultures they could eat.
I never care too much about the treatment if something that will ultimately be slaughtered and eaten. Because from my perspective i'd hate still hate someone for eating me regardless of how nice they are to me. but that said it's easy to research which product have better treatment of animals. they label it on the packages now.