I do agree with the theses that a lot of the anger over the GOP Congress not stopping Obama was based on unrealistic expectations. Deciding the party had to be destroyed at the very point where it might be able to regain power and undo much of what Obama did seems like a rather sad joke.
But, it is what it is at this point. The options are to either back Trump, or not back him by try to salvage as much of the House and Senate as possible. But beating him in the primary really is no longer an option.
Well if the House and Senate can bring themselves to stop attacking Trump, there could be coat tails.