Or to put it another way, you believe advertising is not effective at all on anyone?
I bet the author is very concerned about "internet radicalization". I bet he's so concerned that he began to feel the stirrings of his own radicalization while pretending to support Trump on the internet. The article is a fantasy brought on by what the author expected to feel.
All respect, but if you didn't find the part of the article you quoted funny, your bullshit barometer needs to be recalibrated.
I know a guy who bought a $500 axe (for chopping wood) from one of those "be a manly man" e-commerce sites that popped up a few years ago. He had never chopped wood before, and to this day he never has chopped wood. Ads convinced him he wanted it.
The same is true of all the ads from those companies, selling beautiful, sturdy compasses or hunting knives that never get dull.
Guns can be beautiful, well-made objects. They can make someone feed safe and prepared. I don't see any reason an ad couldn't convince someone that they want/need one, especially if they're seeing dozens of ads a day.