O'Tink, if I had to make a guess...I think the Clintons just believe that "rigging" is how politics works, there is nothing wrong with it, you have to do it to 'get ahead.' I am guessing they may have craved the history-making presidency no matter what, and did whatever needed to get rid of Bernie.
And I do think Bernie would have won over Trump. Not sure that would have been a good thing or not, the country might not be prepared to take on Bernie's ideas...could have ripped us apart...however, you know me a bit radical here , I made my lifetime first-ever political contribution when I sent him his average $27 donation!
But I am concerned about the extreme polarization in US politics now, and I don't really think the two parties are (basically) all that different...just fighting with each other and within themselves, dirty tricks, so unethical.