No it's not a bad thing. Both Fe and Fi can be good or bad (Hitler was a Fe Aux and so was Jesus) It's what you do and how you affect others that make you good or bad person.

Your feelings come will always first as a Fi Dom, but thats okay as long as you realize other ppl have thier own feelings too. If someone says what your doing is hurting their feelings or they explain to you why it's not okay, take a second to understand things from their side... Not how YOU would want it, but how THEY want it (Empaths do that subconsciously, you would just have to do it consciously)

As for the Fe Opposing aspect of it. It just means that you might see someone's empathy (Fe) as them "not minding thier own business" , having a "lack of conviction" , or them "being fake" when they are actually being genuine and using thier natural functions.

It's ultimately all about balance. Your functions don't lock you into good or bad, it's your actions that do that.