Honestly, Termie, suicide is stealing the nomination from the frontrunner twice in a row; Bernie's supporters will NOT vote for whoever the DNC picks if that person doesn't beat Bernie straight in a clean fight. Doing so is a straight concession to Trump, like, don't even bother with the elections after that, Trump wins by default. So anyone who does that has simply decided that Trump is the 'lesser of two evils'.
Don't you also see how crazy it is that people who can't beat Bernie in the primaries are just supposed to do be able to do better than him against Trump? It's a myth, which actual data already shows. 47 out of 50 polls, Bernie beats Trump and does so better than the rest. He also beats Trump in the Rustbelt, and in Pennsylvania, he's the only one who does so (beat Trump in the polls). It's not valid at all as an excuse to steal the nomination from progressives twice in a row. If you recall, it didn't exactly work out for Democrats in 2016. And back then, Bernie played ball and did 40 rallies for Hillary, but a significant chunk of his voters were still angry enough to sit out the election. That Bernie support won't be happening this time around unless the nominee beats Bernie straight.