In the end it is just a choice, like anything else in piano music. Knowing a huge heap of chords by their commonly used labels is not the same as understanding them in terms of aural and haptic effect at the instrument, and both these states might be far from important to an individual's personal improvisation, depending on what he wants to do, and exactly how harmony relates to that purpose.
It probably cannot do any harm, put it that way, a creative mind uses anything it can absorb, but it is not strictly necessary, and certainly not sufficient. I was drilled in chords and harmony as a kid, it was how my teacher thought about music, how everybody used to. Now, as far as my own music is concerned, especially improvisation, harmony is just surface colouring in relation to the deeper aspects of rhythm, phrase and ideas in general.
Also, I have serious doubts that dynamic harmony can be defined by "chords" anyway. The almost universal tendency, in classical and jazz, to think of music as a series of chord blocks into which musical matter is plopped, now seems as destructive to me as old-fashioned, square-toed forms, ABAC and the like. It is simply not how I think any more at my age.
In short, learn about chords by all means, they are certainly interesting, but how you use them is a creative choice, like everything else, not a mandatory command.