According to the Forbes Magazine article, Let's Start Humanizing and Valuing Older People", Jan. 25, 2017, labels such as Senior Citizen do matter and create barriers.  "The moniker 'senior citizen' tends to cast a shadow that suggests a 'less-than' quality, whereas the 'older person' should be a symbol of strength and a repository of treasured experiences and wisdom."

Being labeled as a "Senior Citizen" is not always good and can be dehumanizing.