I think that when a person is solid in their frumkiet they will not be threatened by seeing any holiday lights and decorations and trees. It is funny how some people go so over board with tons of decorations on their trees and lawns, some people make it look like a winter wonder land! And us yidden we have our small menorah but the light that shines from it is more special and beautiful than all the glitzy tinzel and artificial lights.
I personally like the fact that the goyim are in good moods and good holiday spirits, when the goyim are happy it is good for the yidden!