Correction: Trump doesn’t threaten a GOP fracture, but rather the GOPe geriatrics are the ones threatening the fracture. They seem determined to fulfill, by any means necessary, their dream of losing yet another presidential election. It appears that term limits might not be drastic enough to change the party; we may have to require oxygen limits.
Their actual goal is to keep power, at any level (even second-tier) that fulfills their needs to feather beds, cement and consolidate their power over the rabble, and to do any damned thing they want - because they can.