There's a highly refined, crystalline substance derived from plants that they have omitted and that I would place above alcohol.

Sugar.

Refined sugar consumption at more than just very minimal amounts is a modern phenomenon (last ~240 years) and has been immensely deleterious to the health of the general population. Health effects include dental decay and malformation, diabetes and liver diseases, obesity, and more. Sugar enables modern food manufacturers to make 'attractive' low quality, highly processed foods (e.g. junk cereal breakfasts). We give sugar laden foods to children at a young age, setting up an early dependency and an estrangement away from properly nutritional foods. The sugar industry has been the instrumental cause/enabler of colonisation and slavery. Sugar addiction is almost universal, far more than alcohol addiction, and consequently much more harmful, even when some of the health effects of sugar addiction are mirrored in alcohol addiction.