GOP is being held hostage by Donald J Trump. They know they will be ruined if they oppose, so its fear of angering the maniac Donald J Trump, fear of losing the Senate in January. But behind closed doors, away from the media they have all expressed their views than Biden is the next President.
I have read also that the GOP themselves have disdain for their own voters, the MAGA crowd. So its all theater, and they play along.
At issue with the "faithless electors" is some states themselves that have enacted law that prevents this in 2020. Out of the 306 electoral votes for Joe Biden, 199 of those electors are guaranteed on the state level the popular vote winner slate of electors, and the Supreme Court has ruled this is constitutional.
Since Stacy Abrams and Hillary Clinton are themselves electors this year, I dont see much issue with an alternate set of electors, they are chosen by the state party carefully.
But I am sure that true to 2020, we will see some drama

