I imagine the ban on space heaters refers more to their fire risk, since emergency heat would be permanently installed in a location where there’s not any flammable materials but a space heater can be placed right next to any number of flammable things.
It's one step better than people turning their stoves on.
And hilariously, if too many people artificially heat their apartments, it actually crashes the system somehow because if too many zones in the mini split have heat, it flips to AC mode.