the fact that this thread exists means it's a shit vague title.

the implication is that you "design" an entire "product" but very rarely is that true of today's "product designers." especially in a world where software "design" can include information architecture, ux research and testing, visual design, front-end coding, back-end coding, ideation, product management, branding, etc.

further, it does not infer a medium. for all i know, a "product designer" could be designing can openers. it's equivalent to saying you're an "engineer." oh, so you drive a train? you build bridges? develop software. i was way off!