Working in the bar/alcohol industry, I don’t think parental consent matters, even state to state. If a 14 year old kid came into my brewery asking for a beer, even if it were legal and their parent have consent, I wouldn’t serve them. The likelihood of me going to jail, losing my job, and paying thousands of dollars in fines is much higher than the likelihood that kid gets served legally and everything is alright.
There are many laws in specific states that allow minors to do things with parental consent, like child marriage. Does that make them right? No. When adhering to federal laws, like most websites often do, its better to be safe than sorry.
Plus who wants to be taking brewing advise from a 14 year old? If they want to expand their knowledge, they can easily buy a book, which will be much more beneficial for them.
Sorry, not trying to be an a-hole, I started my passion for beer early in life and I don’t mean to diminish their passion. But as my family members (who work in federal court) say, “ignorance is no excuse for breaking the law.” But seriously, if your kid did something that carries a $5K fine (which is HBT’s fine for a repeat offense of this), would you want your kid to do it?