Many people work in marketing in some way or other, and that work fulfils an important function. I'm not particularly thrilled about it either, but we don't currently operate in a perfect information market and human bandwidth needs to be used to propogate ideas.
Rage on it if you like, but you're yelling against the wind. My recommendation would be to save your blood pressure.
As long as everyone knows their place. I've found that the people - who add nothing more than their opining, expounding, and big promises but confuse having a core idea for the sweat that forges it into reality - to be lazy, parasitic, and dishonest manipulators of the worst sort who look at the people doing the real work as their instrument. To me, no one is more irksome in a business, and when they have equity it's an injustice I simply can't tolerate.
Marketers also have the 99% / 1% rule. They aren't coming up with new marketing slogans all day long. They come up with 1 good idea per quarter and then go through the painstaking process of fleshing it out, testing it with groups, presenting it to management, getting design teams to execute, managing a project/budget/schedule, etc...
This is a general human rule that most people spend WAY too much time criticizing the effort of those of us who are working.
Rage on it if you like, but you're yelling against the wind. My recommendation would be to save your blood pressure.