Why are practical skills not taught at school anymore?

For quite a long time, pretty much as long as what can be called "primary school" has existed, pretty much everywhere in the world, students were not just taught to read, write and things like mathematics, history, geography and other theoretical stuff, but a quite big portion of the curriculum was dedicated to teaching them practical skills: How to cook, how to do woodwork, how to repair stuff at home, how to sew a button or a torn cloth, and so on and so forth.

This was very common in the vast majority of schools up to some time in the 1970's or 1980's, give or take, depending on the country. In fact, it's still the case in some countries, although perhaps to lesser extents than it was in the past.

Then something happened in many countries. There formed this strange mentality that teaching such practical everyday skills does not belong to school. That primary schools are nothing but preparation for high school and university, and you don't need to know how to cook a meal or sew a button in order to go to those. Thus, over the years and decades, in country after country, teaching practical things in primary (and even secondary) school was diminished and diminished, to the point that there are some schools in some countries today where such skills are not taught at all! Nothing. It's just book learning and more book learning, and written tests and more written tests, and that's it.

In fact, in some countries, such as many parts of the United States, those tests have become outright industrialized, where students do nothing but memorize facts and fill up multiple-choice questions that are then mechanically read and graded.

Many people have criticized the modern primary schooling system in many countries, especially in the United States, as having become just a factory production line where children are fed in from one end and workers or university students are spit out from the other end, with almost all humanity and practical skills having been removed from in between. Particularly nowadays if anything is actually taught to them, it's to indoctrinate them into becoming far-leftist political activists.

This quasi-industrialization of the schooling system and the almost complete removal of teaching practical skills, and overt emphasis on test scores, has quite ironically resulted only in the exact opposite of what's intended: Indeed, American students tend to score very poorly internationally. They score very poorly even in the very book-learning subject matters that have been left in the schooling system that they need to mechanically learn to fill out those multiple choice charts.

It's a meme that's as old as humanity, that youth nowadays has no practical skills and are completely clueless and can't do anything on their own. Well, that's actually quite true, and has been for several decades now, and the removal of practical skills from school hasn't exactly helped that.

It's completely asinine.