The only "bizarro" aspect of it, is that so many of the people who spent the entire election declaring that it WOULD be full of fake votes (the right), now that they won (or think they did), want to point and laugh when the OTHER side says the same things they did, just a few weeks ago.
You could also say the opposite of that: the entire time Trump was berating the voting system, calling it rigged, and indicating he wouldn't necessarily concede if he lost (and everyone predicted him losing), the media, Hillary, and the Dems, demonized him for calling into question the voting process.
Once Trump won, Clinton was in a pickle. If she called into question, the legitimacy of a Trump win, it would paint her as a complete hypocrite.
Don't be surprised if it is found that Jill Stein is being funded, cajoled, offered favors, etc., to push this issue.
Nothing should surprise any of us, any longer.
Well, I think you are reading things into this, which aren't there. A number of people here are doing that.
I suggest that each part of this, is independent. Trump said what he did, because he's Donald Trump. That is, because it's a part of his personal ego-stroking modus, to declare any contest that he loses, to be rigged against him. In addition, he seems to have a love of intrigue and conspiracy, probably because he enjoys imagining that he has "conspired" to make money in his various business activities.
The reason why the Republicans have harped on voter fraud, is unrelated to Trump. They do it mostly, in order to trick certain segments of the American public into voting for them, even though Republican goals will actually cause the people voting for them, to have much poorer lives.
The democrats usually oppose Republican efforts to "fix" the voting process, not because they want to cheat (as certain people here like to pretend), they oppose them because most of the Republican efforts are rather obviously targeted to keep legal, likely pro-democrats from voting, and not from actually making voting any more secure.
In turn, the reason why the Hillary campaign would not themselves challenge the election, isn't "fear of being exposed as hypocrites," as (again) certain people here like to pretend. It is much more likely that they want to avoid a repeat of the unpopular soap opera that was Bush Gore election.