I don’t think “political suicide” exists anymore.
Heck, we still have SNAP, even though it's almost universally hated by republicans.
These are the same ones who currently would be able to repeal the ACA tomorrow if they felt like it. You're essentially asserting that the reason they aren't is that they like the policy, and I don't think it's crazy to expect more justification for a claim like that if you want people to find it compelling.