For me I view this as being quite broad to describe someone as 'emotional' - I think it depends on many things, the whole person, the circumstance, and whether it's genuine or not.

Broadly speaking it doesn't bother me whether someone expresses their emotions more readily than others, several of my friends are like this although I myself am more reserved. When it has bothered me is the few occasions when someone has used emotional displays to manipulate others, but that is quite separate from being just a more readily emotional person.