Democrats won the first round of repeal-and-replace Obamacare by asking that question. Most Republicans took the bait and believed they needed to actually replace the abysmal failure, instead of just asking a simple question back: “Why do we need to replace an abysmal failure of a law? We should only need to strike it from the record.”
“29-or-so members” of the House Freedom Caucus, as the Wall Street Journal opines, did not fall for it. They wanted a repeal-only bill, with specifics of what would replace it to come.