Family says "You look young for your age"

Im a 17 y/o trans man on T, voice deepened as well. My family (mother specifically) is constantly telling me I look "young and innocent for my age". I dont know if I should be taking offense to this, but younger boys tend to look "less masculine" due to not hitting puberty. Im putting this all in quotations because gender is quite literally a social construct so be whoever you want to be <3 but i still have a ton of feminine features (my facial structure, bone structure in general, and height). My mom and brother also constantly use they/them pronouns towards me and I have told them mulitple times i use he/him. I guess my overall question is am I really allowed or in any place to take offense over the comment "you look young for your age/you look so innocent"?