Sorry to here that. I always try to treat the LPN's (and techs, assistants nicely).
Unfortunately, some of them I don't. But that stems from the "treat others as you treat them" theory.
I hope everything works out for you. I'm sure you are a wonderful nurse.
I always said, there are physicians, RN's, LPN's, Meics, EMTs, techs and assistants. I wouldn't let work on my dog, (if I had one).
However, there are also physicians, LPN's, EMTs, medics, assistants and nurse techs I would trust with my life.
The boards verify you are minimally competent to do your job, and as they say it's just a piece of paper.
Let your wisdom, knowledge and actions speak for you. Anybody can say they are great at their job.