Optics.
Perhaps it is the plan to make DJT speaker of the house. The optics would not be as good if 45 opposed McCarthy because he wanted to be speaker of the house.
Now Trump can get a nomination without that fight against McCarthy.
After all, McCarthy is the first failed speaker vote in 100 years. We all know Trump's world consists of Longshots.
He did say "we got them ALL" maybe he really will completely drain the swamp with one blow? That'd be so epic.
Won't happen, but so epic.
From your keyboard to God's ears