because it is stupid.
saying people cant connect with someone on a personal level or identify with them because their appearance is a bit older is stupid. if someone can connect with a 1000 plus year old time traveling alien with multiple faces, who has commited genocide on multiple races but has saved countless more and is always the most clever yet at the same time most silly and angry and sad all at the same time and is this emotional roller coaster with a young face but suddenly hes a bit older looking and they cant?
age has nothing to do with whether you can connect with someone or whether you can identify with their experiences and emotions.
hell people who watch this show can connect and relate with aliens that dont even look human.
its completely shallow to think otherwise since this will only effect the fangirls and nobody likes them anyways