Can we all agree that many Coleman challengers are complete fucking morons?
Only if we can all agree that Franken challengers are complete fucking morons.
Coleman's people are not morons, in any case. They're engaged in a petty case of tit-for-tat frivolous challenges with Team Franken. Part of it is petty revenge, part of it is PR: Coleman doesn't want Franken to dramatically outpace them on challenges, or the running tally (which doesn't include challenged ballots) will start showing a Franken lead.
As I mentioned in my response to BRTD's post, there really should be legal consequences for this sort of petty misuse of the legal system.
How can you decide what challenge is frivolous and which one isn't? Slippery slope.
Possibly really extreme cases like the most recent one BRTD posted that was an overvote for Franken & the Constitutionalist, but Coleman's camp challenged as a vote for himself.