Muse, I think the problem you have is more with marketing in general, wouldn't you say?
In general you could start with even a decent product that is just what it is, and people will attach the most absurd claims on it based on whatever they think will sell that product.
If people are into a health fad that year, even the most unhealthy things will have a marketing spin on being more healthy, like, say, selling tobacco with 0.1% less nicotine and showing ads of people smoking and saying "I smoke brand X because I care about my body and I want to be healthier", because technically that might be 0.1% less chance of cancer than the normal brand (it's not, but it might hold in court with good enough lawyers

)
But it's important to separate the bad aspects of marketing from products themselves when possible, some might be inferior or useless products once you remove all the hype, others are just nice decent options. For example every now and then it's good to have the option to have some chocolate or ice cream or energy drink or whatever as part of enjoying life, even if a piece of celery might be more healthy and tends to have less marketing claims around it.
Part of the fault of marketing is our own, the problem is that those hyped claims work on many people. It's like that for many things, politicians often get elected because they say what people want to hear, while the honest and intelligent ones that actually tell you how things really are don't get elected.
Ultimately I think most people wise up to marketing claims and take them with a grain of salt.
I have bought drinks because of new flavors and colors however, because it's fun to try new things, even if that's part of marketing too. Maybe sometimes you want to know how a green waterberrytangerine drink would taste like, nothing wrong with that.
And in general people should stay more informed about the actual physiology, human nutrition and biochemistry because it's that lack of knowledge that makes people so easily swayed and falling for fads or marketing or nonsensical claims against this food or that food.
If someone is satisfied with answers like "wrong" or "lies!" or "trust me" without any follow-up explanation, they will not be able to make good decisions, it doesn't matter -who- says something, what matters is the explanation itself. If you have explanations for each side of an argument you can use logic, reasoning and knowledge to figure out which ones don't hold up and are just hand-wavy arguments based on hasty conclusions that don't actually reflect reality.