Depends if the product is a key profit center. If your startup is making a product and it's not a profit center, it might get binned, it might get pivoted, it might postponed. The advice is great, just don't die on a shortsighted engineering hill when the decision come from emotional attachment to your work rather than what's best for the companies positioning and financial health. You can always put that love and energy into a new/pivoting of the product.