What do you reckon ?

Some experts say it's possible these teeth will eventually disappear. Still, there are a few unknowns in the equation. Third molars develop entirely after birth, the only teeth to do so. Because these teeth aren't present at birth, it may be harder for nature to select against them.For wisdom teeth to form, the tissue that starts the process of tooth building has to migrate back in the mouth to interact with the back jaw tissue. If this migration doesn't happen, then no tooth will grow there.

Again, If people reach a point where they don't use a trait, they may lose it.