Except they used HEXACO which isn't really viable for "emotionality" which is what they tested. Worse, they used the 24-question survey, not the 60 question or 100 question.
If you dig into the HEXACO BHI, "emotionality" is judged based on whether you rate the following questions "1 = strongly disagree, 2 = disagree, 3 = neutral (neither agree, nor disagree), 4 = agree, and 5 = strongly agree":
I am afraid of feeling pain
I can easily overcome difficulties on my own
I have to cry during sad or romantic movies
So you've got 100 people on Facebook being asked 24 questions, of which 4 are about the thing you think you're going to predict. Your results indicate much higher correlation between fear and age (p=0.019), fear and time spent in quarantine (p=.001), fear and gender (p=.001) and fear and being American (p=.001) than fear and buying toilet paper (.025). Not only that, the correlation between buying toilet paper and "conscientiousness" (.045) isn't much worse than that with TP and fear. Finally, 620 of your sample are German while 150 are American... and the Germans didn't hoard a lot of toilet paper. So really, this is one of the more nothing studies done in a while, which is probably why CNN decided that it was actually about conscientiousness.