There are many things I am sure we don't agree with, in the research/analysis (link below), but that doesn't change the fact that more and more of this rhetoric fuels the fire.
We are hearing more and more about this sentiment across many markets, from the local, state and federal levels.
While it may be much to do about nothing, from a legal, can they do it point of view, our concern is how many landlords get taken back to the woodshed, spend time and money over frivolous muck started because of this sentiment, and "Win". Only having to sell, close up shop...after winning. 
'Renters Are Struggling': Economists Back Tenant-Led Push for Federal Rent Control
Rick