DC currents emit a static magnetic field with a frequency of 0Hz. This is not my concern since the magnetic field is so weak from a 12v system. Frequency is the issue with AC currents. because the EMF from AC lines are time varying, they can induce currents and voltages in nearby conductive objects, like people.

The WHO seems to think ICNIRPs concerns are valid:

https://www.icnirp.org/en/frequencies/low-frequency/index.ht...

Read papers 9-12 and let me know if you are still so certain.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2203969/#B9