Of course marketing isn't evil, and I didn't say that. Marketing can be quite awesome and impressively done. However, you know AI/GPT-3-based writing and helping of marketing copy will lead to lowest common denominator scaling of marketing copy to everyone with tweaks for the specifically targeted person. My opinion is that that's as gross as ML people at Google optimizing for every ad click with slight tweaks to maximize revenue at any cost. Gross.
As to your dig, my conscience is clear; I made a conscious effort to avoid such ends in my professional life, sometimes to my short term detriment. My personal time is mine to do with what I please, even if you consider some of that time to be used in a self righteous or low effort way. It's not self righteous to point out bad things.
Marketing isn't evil, and it isn't the end of the world.