They should definitely be highlighting the issues of the less fortunate in life but they should be doing it from a place of knowledge of what their actual needs are right now. A rent strike is not what they need. They are not thinking about climate change right now or rights and dignity. Whatever level of poverty they are suffering they just don't want to catch Covid-19 on top of their current misery.
They should be looking into conditions for the homeless right now and making suggestions for them and for people who are addicted to hard drugs.
Who exactly do you imagine has been organizing these rent strikes? Some champagne socialists? That you would assume that the very people who have been working around the clock on this for the past week and a half are not the exact same people who have spent years organizing for tenants' rights, organizing against evictions, organizing for affordable housing, organizing for living wages, organizing for liveable social assistance rates, organizing for harm reduction and safe consumption sites shows just how divorced you are from any on the ground organizing.
Participate in the strike, or don't. Support it, or don't. That's entirely your call. But you're really talking out your ass here.