Is there any doubt that the high quality of agricultural items has been steadily declining?

Good quality Crops on aquaponics systems:
Question by Fug Conservatism: Is there any doubt that the good quality of agricultural products has been steadily declining?
Guldens® mustard claims to have employed the precise exact same recipe for over 100 years, but up until about 10 years ago, it was one of my favorites. Now I cannot stand it, because it tastes much more like salt than mustard. The flavor of a mineral like salt does not alter, but the quality of mustard seed can differ

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