If you use living soil or a real rich soil from a fertile area, mixed with perlite, you dont need nutrients. If you use potting soil you do need nutrients, unless you use it to make living soil.
Soils like ffof cover you for a couple weeks and on most autos you only need bloom type nutrients. You can use all organic products with it unlike reservoirs. But if just learning coco is easier to learn. But some like me are set in our ways. I think soil grows taste and smell better. Although generally they start out growing a bit slower.
In the end it's all just personal preference or what you know.