By October the boycott had collapsed, due mainly to lack of support from rich Catholics. (As the rebellion progressed, rich Catholics became almost as hated as the anticlerical government.) As one Guadalajara merchant put it: "I'm a businessman and I have obligations. I'm losing money because of this damn boycott." Rich Catholics also incurred anger by paying the federal army for protection and calling on police to break up the boycotters' picket lines.
From here: Click here for the source.
Well, there’s a leftist spin on every story. Usually it is found wanting when hung in the balance.
Your citations are by Jim Tuck, who “founded the only chapter of Americans for Democratic Action outside the U.S., now named in his honor. Adelante (’Forward’ in Spanish) is the chapter’s official publication.”
The ADA is a soft leftist organization. However, “Forward” has been the traditional slogan of Marxists for almost a century.
There’s no dispute whether every action of the Cristeros was saintly. War is a horrible thing regardless of who is involved.