Hm. Probably for the same reason 18-year-olds can enlist in the military and die in combat??It's a pejorative expression referring to brainwashed teenagers going back to the days of the anti-war movement. No one under the age of 25 has a fully developed brain. Why allow people only 18 years old to participate in the extremely serious election process?
"Researchers say the 2022 election had the second highest voter turnout [27%] among voters under 30 in at least the past three decades. So far, the highest turnout during a midterm for this voting bloc is 2018 when about 31% of young people who are eligible to vote cast a ballot." (see: https://www.npr.org/2022/11/10/1135...m elections in,according to an early estimate.)