There are basically two arguments here.
First, you can’t just open the door to a heated building and say it’s open for all incoming ‘guests’. There has to be organization to this, certain limits on how many can be safely housed for the evening, and sanitation efforts detailed out. For some church operations, they haven’t done their homework, or understood what they are volunteering to do.
Second, city governments usually do a crappy job when they stand up and suggest they will run such-and-such program. In the cases where churches have been involved and gotten support from it’s membership (qualified managers, technicians, craftsmen, etc)...they’ve normally done a better job.
The socialists who run the City are raving bonkers crazy.
fire and safety codes need to be fallowed but I am betting that this has more to do with the impact a homeless warming center has on the neighborhood then fire codes. depending on the numbers this can have a big impact on those who live near the church