Imo Fe is very plastic and will mold itself exactly to a person or situation in a way that must feel expressively invasive to someone who isn’t receptive to Fe.
By the same token, Delta Fi has often felt invasive to me because of evaluations over how I or others should or shouldn’t be, or a desire to get into my thoughts, which are entirely off-limits.
I care about what people do, in a way, but I don’t care how they arrange or manage their interior lives.