The thing is, you're still breaking the original law, which is "you must prove your age to access this content."

Using a VPN, or any other technical workaround you can think of, doesn't negate that the law in your state says you must prove your age to access the content.

States require proof of age to purchase alcohol. You can ask someone who is of age to buy it for you, that doesn't make it legal for you to have it.