EDIT: A lot of you are reading into the tweet while still somehow agreeing with the overall message. No one is saying we should eliminate music programs or that we should teach toddlers about healthcare plans. The tweet is making this thing called a --checks notes-- joke, that also conveys the message that schools could teach more practical skills that young adults will need going forward.
districts in some parts of the country do have classes, senior seminars, or workshops, that cover things like this and other 'life skills'. it was a graduation requirement at my public high school, waaaay back in the 1980s in minnesota.