Exactly. If Republicans chose to dismantle Obamacare and destroy the health care industry and likely economy with it, they 100% own the consequences. They will get zero help from Democrats when they come crawling to them for a lifeline.
Their hope is pretty clearly to repeal it with an effective date of 3 years later, so that they can separate the action from its consequences. Then they'll come running to Democrats, asking them to defuse the bomb they just started ticking, and in three years they'll either have a big bipartisan victory or a huge disaster that they'll try to blame on Democratic intransigence. It's so craven.