I don't think anyone here is advocating ignoring or accepting growling. As k9krazee says it's better to focus on the root of the problem, however, which is building a trusting relationship with the dog so that growling just doesn't even come up. Making a training game with meal time, teaching "leave it", etc, are ways of doing this. It's a different approach than "I'm going to put my hand in your food and if you react wrong I will take it away." which doesn't address the underlying issue of trust and deepening your relationship, which would eliminate any possible anxiety or defensiveness she may feel about her food.

But do realize many people have many different views on dog behavior, dog training, dog problems, and that yes, you will get many conflicting views because of this. When it turns into rolling eyes emotes and people getting more personal it probably really does make you feel uneasy. I would just suggest to continue reading up on various viewpoints, maybe trying some of the books out there on dog behavior because even if you don't agree with everything an author says, you can still learn and gain a lot from it. I'm sure your pup will do just fine.