From violations of privacy, to the mainpulation or even maliciousness at its core, I think marketing at it’s current state is poison to society. But I also think it might be a necessary evil. What would be a good alternative implementation of advertising look like? Or do we even need it? If the former, how would advertising look in a non-capitalist society?
A world without advertising and marketing is a world without persuasion. These two concepts by themselves were never the problem, as they’re just a means to increase awareness and demand for a product or service. To me it seems that you instead take issue with a consumerist society.