This is all pretty much right. This was the best possible outcome for Trump. We already see them blaming Democrats. Even someonesfuckingmind in this very thread is saying Dems are equally responsible, lol.
Maybe. It will be harder than Trump and the Republicans think to blame Democrats if Obamacare blows up, though.
Just play the tapes of Trump repeatedly saying "The best thing to do would be to let Obamacare blow up and then blame the Democrats." Meanwhile people will be asking why the party with both Congress and the White House did nothing.