> "10g Fiber Bars" (fiber bars actually contain only 1g of fiber

The supplement industry is good at this. You might see a protein bar with 30g of protein, and find out it's just amino spiking[1]

People in the fitness industry were sending products into labs to have them analyzed and then exposing the companies on YouTube.

[1]:The act of using low grade amino acids (usually L-Taurine and/or L-Glycine) to bump up the overall protein content