There’s an argument to be made that tablets are more versatile, but they are still companion devices. They're meant to be used alongside your existing computing setup, and in many cases, extend or improve the overall experience.
Chromebooks, on the other hand, are computing devices. You don’t need to worry about grabbing a keyboard or case, and you’ll be able to do more than what you could on an iPad Pro or Galaxy Tab S8+. And the biggest benefit? They’ll be supported until 2030, whereas the same can’t be said for any other tablet on the market, regardless of how much you pay.