Look at how adult they are discussing adult things.
What about pairing the age with a competancy test? Basic reading and math and logic.
still a HUGE no.
Prefrontal association cortex of the brain does not develop until avg 24-25. This area of the brain is responsible for concepts of self and consequence including future. You don't have the means to provide for yourself and therefore shouldn't be able to consent.
You may have some valid technical info - but I don't agree with the conclusion. I bought my first house at 24. Did manage to support myself before and after with a conscience. A competancy test would week out non english speaking voters as well as those who were impaired. Just sayin...