But this isn't redefining the term. Running experiments to discover what's most important, then focusing on building to solve for that is the whole point.
If you get far enough along where you're not able to iterate with well-regarded design partners out of the gate, you've messed up somewhere along the minimum and/or viable spectrum.
It's a bit like yelling "not real socialism" / "not real capitalism" every time someone gives a good counter example to your prefered ideology