Did anyone claim anything happened that would require definitive proof? The argument was that a Chinese company having that kind of ability to reach US citizens is too dangerous in and of itself to let it stand.
It's not a red scare if it is true. And it's not a red scare because China isn't being targeted here because they are Communist - they are being targeted because they are a geopolitical adversary. Russia would be treated in the same manner if some killer app came out of there, and they aren't Communist.
You can't miss that if you're even half smart or don't have an agenda.