Replication crisis come down to funding. If you publish bad results in maths, you lose funding and get fired and humiliated. If you publish bad (but exciting or popular) results in social sciences, you get more funding and acclaim. All subjects are basically (sadly) products. Maths, Physics and Engineering are products that have to (mostly, eventually) actually work. Politics, Sociology, Gender Studies etc are more about entertainment. Som fields (eg nutrition) are a hybred of the two: some serious factual research, some fads and fashion.