This is a blatantly false comment. For the sake of other viewers on HN that is not familiar with Korean politics, this is totally fake (and is probably pushing the views of the Korean alt-right).
United States sharply criticized Yoon after his unconstitutional martial law declaration, publishing pretty strong remarks that it was illegimate[0]. They have consistently spoke (in diplomatic language) that they do not support Yoon until he was impeached.
Impeaching Yoon was supported by 75% of the country [1] and anti-Yoon protests were not seen as anti-US nor pro-China at all.
The newly elected president, Lee Jae Myung, is not seen as anti-US nor pro-China in Korea (he does have a less anti-China stance than his predecessor), and any claims of election fraud claim is baseless[2] and without evidence.
The few paragraphs on telegram groups are groups that are run by the alt-right that send reports of anti-Yoon social influencers to the CIA, arguing that they were anti-US and communists[3] (yes, the red fear and the cold war is still a thing in South Korea, thanks to the North Korean regime, no, we do not recognize North Korea as a sovereign state)
Yes people are affected due to the new visa process, PhD students big among the affected, but no, big businesses are not being blocked sending their workers to the US. Samsung is not struggling getting visas.
This is a totally baseless fake news. Please don’t let this information spread. Thanks.
[0]: https://www.reuters.com/world/us-says-south-koreas-yoon-badl...
[1]: https://en.wikipedia.org/wiki/Impeachment_of_Yoon_Suk_Yeol#O...
[2]: https://factcheck.afp.com/doc.afp.com.36RG6PF
[3]: https://koreaherald.com/article/10019148
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Not trying to shoot the messenger, but the user has a history of getting flagged with far-right racial comments: https://news.ycombinator.com/item?id=44405917, https://news.ycombinator.com/item?id=44203934, https://news.ycombinator.com/item?id=44203849
They also got flagged previously by arguing the sentiment of the Korean alt-right: https://news.ycombinator.com/item?id=43431867
And also say that they submit AI-generated comments as well: https://news.ycombinator.com/user?id=pkkkzip
I would not trust this person’s comments.