To be fair, The yessers use poor logic to support their opinions, scare tactics based on lies to sway undecided voters, their entire premise for supporting the contract is based on a complete lack of understanding of basic economic principals (i.e. inflation), they have demonstrated a complete inability or unwillingness to answer legitimate questions, and I could go on and on. But you're right, the yessers are the reasonable ones, and the "vote no crowd" are raving lunatics.
The "conjecture", as you put it, is actually people trying to suggest what could happen if the contract passes. The reasonable response to such is to explain why things won't turn out that way. But no one has any real answers, just more conjecture and speculation. It's the difference between people understanding that poorly written language needs to be fixed,and people who, for whatever reason, want to go along to get along and maintain the status quo.