I am trying to make Parlsley validate all the rows in the table except the last one, and it seems to ignore me )
excluded works by filtering your inputs, i.e:
It does not "redo" the search from the form level, i.e. it does not do:
$yourForm.find(inputs).not($yourForm.find(excluded)) # *Not* the way Parsley treats `excluded`
excluded selector is thus ineffective.