The amount of bitcoin fans who are pestering Amazon is a drop in the bucket compared to the amount of people who either a) aren't even aware of bitcoin yet ...
Then wouldn't Amazon having a Bitcoin icon on their payment options list inform more people that there was this thing called Bitcoin?
This is partly what we need, right? We need more people to at least be aware of Bitcoin. Even if 95% of people see the logo and shrug it off, the other 5% that show interest (possibly young, tech fashion conscious people) could amount to a lot of new Bitcoiners.
When AMC Pacer came out, it succeeded beyond AMC's rosiest projections. Couldn't build them fast enough. Next year--meh. Year after that--disaster. AMC was an odd car--people either loved it or hated it, nothing in between. The people who loved it absolutely had to have it. And they did--got it the first year. The stragglers mopped up the demand the following year. By third year, everyone who wanted one had one, sales went to shit. Along with shit press & slews of problems which didn't surface during initial excitement
The point being it's irrelevant how many ad campaigns AMC ran--the niche was already filled. Bitcoin's niche is filled too. "Young, tech fashion conscious people" you want to reach knew about Bitcoin years ago. They are, almost by definition, the first to be aware of tech innovations.
What you're tapping now, five years post the time when Bitcoin tech was new, is the opposite of that demographic.