Why are standard tobacco flavorings so incredibly weak and sucky?

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It didn't used to be like this.

I used to be able to buy American style and flue cure flavoring that was reasonably potent and tasted like tobacco. Now the same companies are selling flavoring with the same name for twice the price that is MAYBE 1/10th as strong, to the point that it is impossible to mix usefully.

Is there anyone still carrying decent tobacco flavorings?

Does anyone know why they aren't?

Why are standard tobacco flavorings so incredibly weak and sucky?