They gave Roy Moore no support in his US Senate run. You can’t blame him for his attitude toward party leadership. Party leadership is vile to anyone they don’t control.
He burned his bridges with the Alabama party leadership back then.
The 2006 debacle was particularly disgraceful. Losing a primary race against a popular sitting governor and then complaining about a "rigged" primary and refusing to concede a race he lost by 30 points is something I'd expect from a childish, mentally unstable man.
All of this makes me wonder why this dope insists on running in GOP primaries at all.