There are certainly some people saying "f landlords" with little justification. But there are also a good number of people saying that because they have lived in run-down housing that's detrimental to their health. Slumlords are a thing. I live in a small town right now, and there are absentee landlords here; I lived in a big city and absentee landlords are everywhere. For all the people who have paid rent in a home where the water doesn't work, the heat doesn't work, the insulation is failed or absent, mold is unabated... "f landlords" is a pretty appropriate response.

There's no easy solution when we've built up such a strong culture of individualism, that's effectively focused on avoiding collective responsibility for individuals who are struggling.