Firstly, everything I write is my opinion, got that? Just so as I don't have to write IMO every single post.
Secondly, If the PLP is content simply to remain in opposition, with its MPs unable to effect any serious policy change then of course it should be content to get behind Jeremy and let the Tories run rough shod over the country until he resigns, retires or kicks the bucket, whichever comes first. Is that what you think they should do? Simply shut up and put up with Jeremy whilst believing fervently that he will never lead their country to a GE victory?
What a lot of assumptions!
1. That the PLP believe JC can't win an election.
Maybe they're afraid he will!
2. That a party in opposition can't affect policy.
Farage managed it from outside Parliament!
3. That the Tories will run roughshod over the country.
Corbyn offers the clearest alternative, unlike the PLP before who seemed very similar to the Tories.
Finally, they are rejecting democracy which put them where they are. If they expect the electorate to shut up and accept election results so should they.