Is this notice to leave legal?

[Dreamerb]

I wonder if there should be a sticky on this. At least once a month someone comes on here asking this exact question [...]

I second that.

and then an amateur landlord claims that the PTRB act allows them to break a lease and kick someone out.

Ahem. Speaking as an amateur landlord, I keep trying to correct this misapprehension. We aren't all recklessly ignorant you know.