I don’t have a problem with contested convention where the nomination is fought for between the top candidates in the delegate count if neither have the necessary minimum (in this case, 1237) for nomination. Happened in ‘76 with Ford and Reagan, with Ford obviously emerging the winner.
But I have a big problem with a brokered convention where the party establishment chooses anyone they damn well please outside of the top delegate winners, even if their choice didn’t participate in the primaries.
An interesting story about ‘76. After Reagan made his “concession” speech at the convention the mood in the hall was “we nominated the wrong guy” according to many that were there.