Not so incredible if you consider how the sausage is made. People who hate math pursue social science PhDs and are taught "p-values = truth". These same people are pressured to produce lots of research, and not just boring research but preferably shocking research. Journals are incentivized to publish such shocking research because that kind of research gets cited. When you think about it, this stuff will probably hold up for a long time to come.
It has little to do with stereotypes about social scientists hating math or misunderstanding p-values.
The current system incentivizes p-hacking. Nobody wants to throw away their work if it doesn't meet the p < 0.05 criterion, especially when their career is on the line.
While it isn't the most concrete sample size, when I was at college the mathematics requirements for the soft sciences were far inferior to the mathematics requirements for hard sciences. To the extent that even the easier statistics course in the math department wasn't require and instead was replaced by a statistics class in the social science department that was only valid for social sciences.
