Well yes, the article is saying exactly that: that individual actions and consumer activism don't do shit and structural changes are needed. It even gives some examples for structural changes that could be helpful in the short-term.

I completely empathize with your frustration and I feel like individual actions are used as a way to give people some feeling of power that they don't have and that stays ineffective. It takes the pressure off of companies to change while giving people the feeling like the achieved something. And politicians in most countries don't have an incentive to change the system either because they live off of lobbying and may get a job at those companies later.

I added the anecdote in my original comment just because I was surprised at the scale that Amazon had an impact on the economy. And yes, it obviously didn't do much when I took individual action and boycotted them (apart from giving me a feeling of some integrity).