But it appears to apply only in the workplace & public accommodations.Correct. You can still freely report anyone to ICE that you want to in New York City. It is when used the possibility of calling ICE as a threat that one has broken the law.
It doesn't appear to limit speech of others. So if you see @oldbadger
walking towards you in Central Park, you can still legally say...
"Go back to where ya came from, ya swishy festering illegal alien!"