I'm pretty sure Brad Lamb did not inherit these tenants when he purchased the property. He sent out a mass email to his marketing list in December 2019 advertising hard lofts for rent: "Loft style rental opportunity! Two recently renovated units now available in The Junction at 1407-1409 Bloor St W..." with photos that match those seen in the recent news articles.
The timing and the wording implies that he renovated these units after purchasing the property, and rented it out to these tenants. (If not these tenants, depending on how long the current ones have been there, then there were others before these ones, that he was also responsible for).
So just to be clear, he definitely did NOT do the 'nice' thing.
If he was responsible for the renovation, then he was either aware of the safety issues and ignored them, or was just flat out negligent. To actively then go and seek out renters, knowing the units were unsafe is terrible. And then after this whole fiasco to offer zero assistance is just adding insult to injury.