I've yet to see a rational argument about why dildos are unhealthy. It's all super vague about them being to young with no real explanation. And 12 year olds experience sexual urges, get over it. It's not creepy to discuss when it's brought up unless you make it creepy. He's not saying he wants to fuck her, he's saying she has every right to explore it like other people her age are probably doing too.