A, E, C can promote the development of cancer cells.
It is clear about A, E, but extra intake of C vitamin was associated with curing cancer too. Probably, the vitamin's origin and cooperation with other nutrients may play a role as our bodies are used to get C with other antioxidants.
You are right that vitamins are quite popular because of outdated science and excessive propagation. Despite that, there are some I would recommend to take at least to some groups. If you live in temperate climate areas or further north, it is likely the clouds will carry on hiding sun for several days. The angle also matters. Vitamin D3 will not be produced in a sufficient amount at this point.
Then, B12 is must have for vegans if the don't eat chlorela. EPA and DHA is good for people who don't eat fish, but these are not vitamins.
I would be quite interested in remake of some old studies if they were wrong and if they are still today. The facts speak that we take less vitamins every year.
From my recent article:
Soil is getting depleted. After about 70 years of "new age agriculture", the minerals including copper, zinc, iron, magnesium and others got lost. Industrial fertilizers don't replenish them and natural ones are not used as much today. From 1941 till 1991, the amount of copper in food was reduced to 1/5, the amount of zinc to 2/5, iron to 1/2, and magnesium to 7/10 just for example.
https://steemit.com/health/@greenmask9/38-apples-a-day-depletion-of-minerals-in-soil