Well the reason is simple. And I've posted it many times on here. The PRTB is toothless against tenants who are paying zero rent and who have PRTB orders against them. The reality is that the Determination Orders of the PRTB are not enforced by them as they cannot do so without taking the tenant to court. And they don't want to waste money on that. Tenants have no money you see. So a court order against the tenants for costs means zero to the PRTB and they know this.
And let's remind us why the PRTB was set up, to avoid going to court. So now instead of going straight to court, and I mean via a year or so, you have to waste your time going via the PRTB, with appeals taking longer and you end up with a worthless bit of paper, the Determination Order and then you have to reinvent the wheel and go to court. Lovely system that. And who is paying for the PRTB. You are.
And conversly if the landlord, with his valid eviction order from the PRTB actually carried out an eviction, that would be illegal and the tenant would then take a PRTB case and win and the PRTB would rule against the landlord and fine you, I've seen a fine of 10K ! and then if you don't pay that , the PRTB will take you the landlord to court to get it from you. You couldn't make it up.