Landlord here. Someone else said it best. We have mortgages to pay too. The province also shut down the possibility to evict in order to pay it (for now). CERB nullifies what would have been an explosive, shitty situation for everyone.
If landlord’s mortgage is risk-free, it means that the landlord is leveraged at the expense of people who don’t have home — which is rather unfair economically, and leads to more inequality. Wealthy risk-free landlords get passive income and re-invest it into more leveraged assets, poor people pay taxes to bail-out their landlords.