Although I don’t know enough to give you an answer, there are genetic snps that tie into ear wax related genes that show up on genetic reports which may give you a better idea of why. Prometheus genetic reports I think mentioned ear wax. Not sure if you’ve biohacked this already but genetics has some ties to this I bet.
I used to have horrible, sticky dark ear wax, until I identified and eliminated all my food allergies. Now – no ear wax!! I read a while back that ear wax is one of the ways the body detoxes. Runny eyes, nasal discharge, sweating, regular elimination and ear wax are a few of the ways the body detoxes.