Legally anyone can sue anyone for anything.

Frequentky suing someone even if the suit has no merit will get you a
offer to settle. Because lawyers can be very expensive.

With some iots worth paying just to be rid of it........

Now take a building with electrical problems the building is old and
the K&T is overloaded detoriating and the landlord ignores the issue.
Say he was informed of bad wiring by a electrician.

Theres a fire apartments are damaged, tenants possesions destroyed.

I wouldnt blame the tenant for suing and hope they win.

Since the landlord was neglient, and probably put lives at risk.