I am a Practicing Adjudicator (ICE, CIC et al). I agree with Justice Fraser, subject to limits of reasonableness.
We in danger now I fear in moving towards departing widely from the purpose of adjudication by aggressive legal arguments. It is a quick, simple, interim process to ensure cash flows down the construction chain. I think in general the courts accept that. I have in fact seen the opposite from the TCC where they have enforced one of my adjudications for almost different reasons than those in my Decision.