You're absolutely right in your critique - the amnesia/wedding arc is painful and Clark comes off as a dunce.
It's almost as though the writers got orders to stretch out what should have been a two episode set into four and having Clark actually use his brain would have forced them to actually think about the story line with REAL complications.
And the whole thing with Bibbo - as a small business owner, needing to protect his liquor license, he didn't bother to question any part of her 'story' in order to help a pretty face? he didn't ask for her SSN for her employee paperwork? Or was she working for tips (in which case he still needed to check that he wasn't harboring a fugitive.) Lois should have been considered a high profile missing person - possibly an abducted person. Even if Bibbo's call to his police buddy came up negative, he would have done his due diligence.
