I’m okay with prohibiting the vaping and trans care until 18. TikTok gets trickier with freedom of speech and Chinese influence.
Vaping is prohibited until 21 right now as far as I'm aware.
One of the more interesting coups I can really recall during my adulthood was the change in age to buy nicotine products from 18 to 21. I was already in my early/mid 20's when it happened, but I don't recall there being any "national debate" about it.
For what it's worth, it's probably for the best in light of flavored nicotine products like zyns, rogues, vapes. I switched from chewing tobacco basically the first time I tried a Rogue (like Zyn). It's basically a mint that gives a nicotine fix.
Keeping that away from high school kids is probably a good thing. Big thing that seemed to keep kids away from tobacco products was harsh flavors and smoke. Or disgusting juice you have to spit. These "new" nicotine products don't have those downsides.