When you publicly have to humiliate, threaten members & families, call out, lie about, mislead, fail to follow the advice of your appointed Cabinet members to gain the desired outcome, and much more. You do it publicly to your own party members, you do it for control, you do if for yourself and not the party. You can call Trump a RINO, because he a Trumpian.
Trump only cares about Trump who has used the Republican party as a tool to gain money, power and control. A Mad Dog that needs to be put to sleep.