There are at least 3.45 billion Chrome users (not chromium, chrome).
Out of those ~900 million adblocker users, how many are using those adblockers that let paid advertiser's to get on a whitelist? How many are willing to make an effort to change browsers? Firefox's 180 million users is the indicative of this, and not all of them user adblockers, so the numbers keep getting thinner.
It wouldn't make a single dent in Chrome's dominance.
According to both websites, the research was conducted on just 2000 USA citizens. In my opinion, that's a lot of weight being pulled by claiming they represent the entire country. I am unable to download the research papers here, but what does it say about the sample? If they are researching solely on more tech savvy people, then I think the results are very likely to be skewed to one side