Advertising for the purpose of paying off publishers to tailor their news to your benefit is disgusting. It's a form of bribery/extortion. Elon Musk is a very principled person and does not believe in partaking in such corruption of one of the most important tools democracy has, and one that we are quickly losing, free, fair and unbiased news. By buying ads for the benefit you propose, to bias the media coverage to favor Tesla, or to stop them from unfavorable coverage, Tesla would be enabling and extending their distasteful monetization of sensational, biased and unfair news. It really is bribery/extortion. By refusing to participate, while simultaneously bankrupting those who continue to enable it, Elon is simultaneously standing up for his ideals and making the world a better place.
You have mistaken a noble quality of those who support Tesla in this (a refusal to participate in bribery) with a shameful quality (stubbornness). Learning the difference between the two (or at least biting your tongue before attacking those of us who are more principled) would serve you well.
Because the world needs more people who are willing to stand up to their ideals. While there are times to compromise on your ideals to achieve success in more important goals, I don't see that as being necessary for this situation.