The ones on a induction cooktop are pretty close-coupled and we’re surrounded by other EMF fields (natural and artificial); among the unknown unknown hazards in life, I suspect this one’s pretty low.

Possibly. This seems to state they typically exceed recommended exposure levels. Although I don't know what those levels were set using (what the consequences would be). So probably falls into the category of "everything has some risk or consequence, and it's a trade-off"

https://pubmed.ncbi.nlm.nih.gov/22674188/