I read this as saying young people are entitled to due process. That they enjoy rights even as minors and we can't abridge the processes around those rights, for example, the right to face one's accuser. I don't read into this the ability for minors to purchase tobacco, for example, as children do not have the maturity accorded adults. A purchase is a form of contract between the buyer and seller, and minors do not posess the requisite maturity enter into such a contract.
Please be aware, I haven't read the Libertarian Party Platform, nor that of the Republican Party, nor the Democrats nor any other. I doubt I'd agree with 100% of any of those platforms, but would probably agree with some percentage of each.
You got it right. Read the post at #468