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What you're describing is often done in trade high schools. Freshman will rotate through trades and pick one to continue on.

Once you need a career it doesn't really work like that though, often you're working years as an apprentice in a specified trade before you can even think about branching out on your own.

If you switch trades you're back at the bottom with apprenticeships all over again.

Someone like an English major can much easily change careers as long as they're somewhat adjacent (e.g., copywriting, research, journalism, etc) and generally starts off at a higher salary depending on their degree level. Until you hit masters level most degrees are broad generalized education.

Trades are specializations. If you're unsure about which trade you want to get into, you'd likely be better served with a business degree (which is another generalized area of study)... at least that can be applied across trades. Many tradespeople struggle with the business side of things despite being very practiced at their trade.