I think it's a bad idea to have people with little understanding of economics, but a high sense of moral superiority, fix the problems they create through their incompetence. Politicians are the last people you want doing this.
Freeze evictions? Landlords go bust. Freeze mortgages? Mortgage servicers go bust. Now what? Mortgages when created are aggregated into securities with guaranteed contractual payments. No payments? What happens to the securities and the organizations that own them? Banks, pensions, retirement accounts, etc? What happens to the mortgage market and the young family who needs to buy their first home?
Actions have consequences. It's nice to have ideas over the internet, but reality is a bit more complicated.