This is fatal to a Republican majority on either side. And it really is nothing more than a tantrum no matter who does it. All the rationale in the world won't explain turning your back on the Republican party because you don't like the leadership.
That establishes a Democrat majority and Democrat leadership.
Yep, it’s like spitting in the wind to have to bring this up each and every election, primary or general. You didn’t see democrats walk away from any of their candidates regardless of disagreements between democrat leadership and the selected candidates.