I say to each their own.
I have reasons for what I believe is right (based on what I see, what my dog's vet sees, and most of all what her nutritionist sees). She is much more qualified to decide what the proper diet is for a canine than me anyway.
When all things are equal as far as balancing the diet goes (and all things are equal with AAFCO approved kibble and canned along with properly balanced hoemecooked and raw until science shows otherwise), then it comes down to food safety and variance among individual dogs.
And honestly, I'm not going to go out and get a bag of Ol' Roy or whatever, but are dogs fed that any less healthy than those fed holistic foods? Maybe or maybe not. Impossible to prove.
I'm not against homecooked or holistic kibble persay, but I just don't believe it's all as good as what it looks.
A lot of E's vet staff feeds Purina. It works well for them. Her vet and I stand there and roll our eyes at them because we opt for something with a little less crap when possible. But hey, one of them shys away from the great Blue Buffalo because patients who eat it tend to be gassy.
I know somebody (from YT) who fed Nature's Logic. Supposed to be great stuff. Dogs did terrible on it.
There have been potential problems with both unbalanced homecooked and prey model raw here. Can't prove it and can't talk about it here. Very serious issues though.
Point is, it's not all as good as it looks and you have to be very careful. And just because a group of people online say something is true, that doesn't make it true.