You can't legally be considered a child enthusiast unless you're an adult. Common sense bro.
child enthusiasm alone isn't really illegal in the first place. so... it has no legal age requirements
it's only illegal if you do something. as far as child research goes, that's illegal no matter how old you are. physical actions depend on your age, but the law itself never actually labels you a child enthusiast either way. "child molester" maybe, or "loveual offender"
by definition, anyone can be a child enthusiast. it just means like, "kid lover" or something, so there's not any reason that, for example, a 14 year old who likes 14 year olds (as you would expect) couldn't be called a child enthusiast. it would definitely be weird to call them that, but not
technically incorrect