Because it’s not possible to enforce. And I’m not talking about minors, but they suffer in result too. In my country these things were hot selling things so often sellers wouldn’t check ID, and even then, it’s not like asking an older brother to buy you something doesn’t exist. It’s just much worse than with alcohol or regular cigarettes because young people and minors often don’t like those.
Weird, all the sanitizers I’ve seen have a big ass label that says “non-alcohol” on them, both sprayed and gel-like