You’re using “ignore” wrong, not the other way around.

If you want to be a linguistic pedant, then we should consider that both “ignorant” and “ignore” ultimately comes from proto-indo-european *ǵneh₃-, which meant “to know”, and a negation prefix. So really the words should mean “the act of not knowing” (ignore) and “the quality/state of not knowing” (ignorant). Not avoiding knowledge, just lacking it