My husband called a 16 year old girl "Hottie"

yesterday I was using my husband's phone to get someone's number (family friend who's a doctor) and accidently came across a comment he mad on his instagram account. last thing he visited was a pic of a 16 year old wearing a blue dress and leaving a comment calling her "hottie" and leaving some heart emojies. I was upset and couldn't help it. I brought it up with him later and asked why he would leave such comment on a child pic and he acted nonchantly about it. His response in particular was "I don't know why ypu're making this such a big deal, kids aren't really kids these days" I asked what the hell this was supposed to mean and he got up and went upstairs calling me ridiculous and crazy to be reacting like this.

IDK, really like IDK what to make of this or how to feel about it. He is acting like I'm overreacting but I'm just upset that on top of all that, he still refused to at least talk it out with me.

by the way, he's 36