1. ObamaCare basically screws younger people (and employers of younger people) on behalf of older people through its mandates for health coverage.
2. The people with the most risk in any discussion about health care coverage are in the 50-65 age group, when their health care costs typically rise but before they are old enough to qualify for Medicare.
3. Younger people voted overwhelmingly for Hillary Clinton last year, and are reliable Democrat voters in most House and Senate races.
4. Older people voted overwhelmingly for Donald Trump last year, and are reliable Republican voters in most House and Senate races.
This is the problem the GOP faces. They can't just shut down Obamacare without having a feasible plan in place to deal with their core constituents in that 50-65 age group.
Everything you say is true about the demographic and political conundrum of 0bamacare. However, the GOP has had six years to figure a way out of the box. And they should have at least had a viable framework ready to roll out. They get in power and it turns out they have nothing. It appears it was empty rhetoric in pursuit of power. And maybe that’s all it ever was.