You're too hung up on the terminology. My point is that they need to put someone up now and begin pushing them, by the time we get to the primary that person should be such a forgone conclusion that the primary is barely necessary. This probably means the DNC would pick someone and it'll probably be a shit choice for leftists, but the alternative is that we get to the election and they are tripping over their own feet like the last couple primaries.
I'm not fond of Newsome either, but I would much rather have him than Vance or somehow Trump. The last thing I want is for the Democrats to fumble the next election because they weren't organized and tried to decide who to support 7 months before the general election.
In no court in the world would you be able to say you were acting in self-defense while acting from 6000 km away.