Pastors are in a very difficult predicament. I feel something of the weight of it.
If he tells the truth about what the Bible says then the following will very likely happen.
1. He will get fired, be ridiculed, hated, and scorned, drummed out of his career, experience financial hardship, and likely watch his own family disintegrate.
2. His church will probably explode if anyone actually agrees with him.
3. Broader society will utterly despise him....
Your point #2 is spot on. The church explodes. Typically it is called a church split. It is not a pretty sight, but as long as there is a following, the pastor is left without excuse.
Its very simple.
Polygyny from pastors preachering is too much change for [too] much people. That's [why] it won't fly.
Asked and answered: (Luke 12:51, et al)
"“Do you suppose that I came to give peace on earth? I tell you, not at all, but rather division.
“For from now on five in one house will be divided: three against two, and two against three.
“Father will be divided against son and son against father, mother against daughter and daughter against mother, mother-in-law against her daughter-in-law and daughter-in-law against her mother-in-law.”
If His Truth, as Written, ends up dividing the Whore Church, because we can't serve "two masters," and a "house divided" isn't gonna stand anyway, and He warned us about it - REPEATEDLY - who are we to call Him a liar?
What fellowship do we have with it?
And why not just do what He says: "Come out of her!" ?????