I think you are right that it was the Bernie Bros that overwhelmed the caucuses and picked this kook. Hopefully, that doesn't translate in November, though I think it will be Biden.
“The problem with caucuses vs primaries. Extremists are far over represented in the caucusing process. “
totally ... that was why colorado voted to nuke the presidential caucuses in favor of a state-wide primary ... many of us thought we were nuking ALL caucuses, but turned out it was just for the prez ...