As for the article, I'll address it in another comment.
His support is consistently enough nonzero across multiple polls that you can say he has some support, but it's often within the margin of error of zero on individual polls. He's not gaining enough to have a welk's chance in a supernova of winning.
On the other hand, he generally leads NY Times-endorsed Klobuchar (and yet, pollsters are less likely to include him in their polls), so there's that.
Which is to say, he has been written off prematurely and in fact is gaining massively.
Paying attention to individual polls produces more noise than useful information; you get more value (though less cherry-picking opportunities) from a poll aggregator like 538s.
But if you want to play that game, the most recent national primary poll I can find that includes Yang has him at 3%, the best recent polling was at 5% in a couple of polls about two weeks ago. [0] The only 8% for him I can find is a poll of voters under 30. [1]
> Which is to say, he has been written off prematurely and in fact is gaining massively.
No, Bloomberg—who started much later and actually is polling in the neighborhood of 8% now—is gaining massively. Yang's been bouncing around between 2-5% with no real trend since October; he's not gaining or losing anything that isn't small enough to be obscured by noise.
[0] see the list of polls here: https://projects.fivethirtyeight.com/polls/president-primary...
[1] https://www.washingtonexaminer.com/washington-secrets/new-da...
Bloomberg is also at over 3x Yang's support in the Ipsos poll that covers the same time as that Emerson poll, and ahead of Yang by a similar amount in most othere recent polls that are within a couple days of that Emerson poll.
Now, it could be that the Emerson poll is showing a real phenomenon that appeared suddenly and that Ipsos missed, but its vastly more likely that its just a statistical outlier blip.