I agree this specific write up is pretty unscientific, but the idea is that it’s a largely electrostatic field - obviously not literally static, but the impact of magnetism should be relatively small w.r.t. Maxwell’s equations.

I am not sure people have normal cognition/consciousness around strong magnets: MRIs are associated with slower response times and cognitive fog https://www.nature.com/articles/npre.2008.2443.1 But at least some of that might be related to magnetic dipoles at a cellular/micro-level vs. “field disruption.”