Except that when people were threatened with losing their healthcare under the ACA, they suddenly woke up and paid attention. They found out they'd be left hanging under the GOP bill and it would be even worse with no bill.  This  includes a lot of people that originally wanted to get rid of it based upon right wing rhetoric. 
I do think there'll be still be a contingent that want repeal and no replacement, but I think it's dwindling.