No one said he's permanently ruining the GOP. He's got the potential to do some damage though.
"That would be best. In the meantime, we need to send a loud and clear message to the GOP and its liberal, moderate and pro-abortion RINO wing, and other weak-kneed, hand-wringing members, if you abandon the party’s long-standing conservative principles and the party’s platform of defending life and liberty by nominating a constitution trampling abortionist, you will never ever win another election and your party dies."-Jim Robinson