The point obviously isn't to give grocery stores more money for no reason, it's to support products that have higher quality standards.
Take poultry as an example, standards vary by county, but the differences between quality labels can be stark. Cheap poultry is often raised in tiny indoor cages and they need to be pumped full of antibiotics due to the unhealthy living conditions. On the other end of the spectrum, organic poultry is free to roam in fields and the coops are regularly moved or kept clean, avoiding the need for antibiotics in the first place.
Even if you disagree that the latter provides a better quality product, it's pretty clear that supporting brands with higher standards results in better living conditions for the animals.
Take poultry as an example, standards vary by county, but the differences between quality labels can be stark. Cheap poultry is often raised in tiny indoor cages and they need to be pumped full of antibiotics due to the unhealthy living conditions. On the other end of the spectrum, organic poultry is free to roam in fields and the coops are regularly moved or kept clean, avoiding the need for antibiotics in the first place.
Even if you disagree that the latter provides a better quality product, it's pretty clear that supporting brands with higher standards results in better living conditions for the animals.