A few of these are a bit hyperbolic, particularly consent. There is never a situation where they are the criminal but an adult wouldn't be, as opposed to, for example, buying alcohol. So the harm falls on their lovers, not them. Also, these laws are quite poorly enforced.

Non-consensual genital modification generally occurs at birth, and in all Western countries is strictly limited to male circumcision. I am not sure, but I don't think you could have your 12 year old circumsized against his wishes. So this bullet point is a bit exaggerated.

More generally, and more importantly, minors have substantial privileges. People are legally obliged to care for them and ensure they have a certain standard of health. Schools are obliged to educate them for free. Crimes against them are punished far more severely. Their own crimes a punished (usually) far less severely, and they are in many cases not legally responsible for their own actions.

You certainly have a point, but it's a bit unbalanced to simply list the downsides. Minors may be among the most restricted groups, but they're also amongst the most heavily protected by the law.