We don't allow dangerous breeds, but are fine with large dogs.

Reminds me of this unfortunate indecent: https://www.foxnews.com/story/nyc-dr-sent-e-mail-rant-to-ex-wife-before-explosion-destroyed-town-house

That'd be very dangerous for everyone involved.

Is his work any good or is it dangerous to tenants or just plain poorly done? 

It's that they know what the realities and dangers are. 

The fact that you can't evict at the moment and the danger of them struggling to find a job.

Being a landlord is potentially dangerous - never put yourself in harm's way if it can be avoided. 

And a danger to buy.The risk for Wells is not been well discussed here but at least there's 3 Wells.

Those in danger will stay in seclusion for an unknown amount of time and the majority will become immune and go back to work.Not saying what's right or wrong, but that's my guess at what happens.  

But, the danger is so real that you could lose your investment to fire and then who knows how long it will take to get insurance money and how much you'd end up getting.