Maybe scientists in soft fields behave differently, but this correlation with other notions of "soft" needs to be explained. It could be a founder effect, but that doesn't seem plausible to me.

"If your experiment needs statistics, you ought to have done a better experiment." - Rutherford

One problem is that soft sciences need statistics or at least make them more tempting. I don't think it's useful to phrase it in terms of blame, that the soft scientists were less able to resist this temptation.

(I agree with everything the Dreaded Anomaly said, too.)