I also (as seen in at least one of your other responses) that people associate AngularJS and Angular when doing rankings in surveys like this one. There are many people who will never try Angular because of their experience with AngularJS.

Also, this isn't a scientific random sample survey, it's people who self-selected to take it. And I think that Angular specifically suffers due to that because it is more likely to be used at enterprise or large companies where devs often tend not to follow Twitter/surveys/etc at least, not in the same numbers as some other groups. Just my opinion.