Maybe, but in my experience condensation usually gives diffuse halos, not those sharp pointy rays.
I think the 55 is actually pretty well behaved, considering the overexposure (unavoidable) of the lights.
Well lenses are not necessarily optimised for night shots.
If you don't like a particular lenses signature then you need to be using a different lens.
You do need a lens hood and no filter
Most thin lens triplets will have two plane air to glass surfaces so double Gauss types should be better in general.