Very true but You're definitely going to need nutrients
Not necessarily. There are growers using soil that don't use nutrients. Maybe some teas but no bottled nutrients. They build the soil to provide the plant what it needs.
Plants do need nutrients but they don't need cannabis specific nutrients and a dozen bottles of additives. Some of the best grows I've seen on this site are from growers using simple inexpensive nutrients like Jacks. Others are using cannabis specific nutrients but basically just the base nutrients and not all the additives. Some of the worst grows I've seen and growers that continuously have problems are the ones buying the dozen bottles and following some ridiculous feed chart adding this and that this week and this and that the next. It's like a chemistry experiment gone wrong.
Light is more important than nutrients. You can't use a cheap light and then expect to make up for the lack of light by using something that came out of a bottle.
Anyway, good luck with your grow.