Here are the top five PCS marks for the men's free skate at the Olympics (p. 12). https://www.isu.org/communications/17361-case-2018-06-isu-vs-chen/file
Judge # 2 (Parker) gave Hanyu the second highest PCS after Fernandez. After that, Uno and Chen (tied) and then, Jin. Fernandez, Hanyu, Uno and Chen are all within 2 points of each other. Where is the nationalistic bias in that? For GOE, she had Fernandez first (27), Chen second (22) and Hanyu third (15). Those results are a bit more questionable, but what would be the point? Chen was pretty much out of the running for the podium. Ironically, the Chinese judge counter-balanced her scores by giving Hanyu 22 and Chen 15.
Nathan may have been nearly out of the running after the SP but Parker's scores for the FS would have had him ultimately with a silver medal. Since Parker wasn't on the panel for the SP, I summed the SP score with what Parker's scores for the top 6 men's free skates and these are the results I get:
YH: 111.68+ 196.76 = 308.44
NC: 82.27 + 225.41 = 307.68
SU: 104.17 + 202.84 = 307.01
JF: 107.58 + 199.21= 306.79
BJ: 103.32+185.50 = 288.82
VZ: 84.53 + 199.29 = 283.82
When you look at what her free skate scoring was compared to actual scores, this is what you see.
Her FS scores had Nathan +9 above his actual score.
Her FS scores for Shoma and Javier were within 2 points of their actuals.
Her FS score for Yuzuru and Boyang were ~ -9 points below their actual scores.
To throw it in there, her FS score for the other US men would have had Adam +10 points and Vincent +7 points above their actual FS score
We can argue that she didn't suppress every skaters scores (maybe that would've been too obvious if she did this to everyone), but there's a marked difference with her score for the US men and her own scores would've placed Nathan on the podium.