You've just used a bunch of words that sounds smart, but provide deceptive value. The typical Bb valved trumpet that exists now does indeed play chromatically. And so will any other class of modern brass instrument with three valves or more.

The chromatic trumpet is an invention that allowed us to escape the trumpets natural harmonic series (Those being the notes a trumpet can play in a single valve position) before valves were invented by drilling holes along its tubes.

Wikipedia is not the best place to learn music theory, and knowing music theory is as useful as knowing a list of rules for programming best practice.