Text, datetime, and dropdown fields have labels, and various attributes.
They should also have a configurable tooltip - either a clickable ? (should be configurable) or on hover. Mobile obvs needs to be clickable.
In our current project we have a whole user story to add this function, and that's wasted time - it should be out of the box and 5 seconds to add
I believe the reason that it is a separate widget rather than integrated is because it has so many configuration options that it would overcomplicate otherwise simple components.