It has its uses.
Like most bespoke items they're good at some things, not everything.
It's nice if you're trying to keep an indoor living space warm for a longer period, like overnight.
They typically have a thermostat setting on it to maintain the temperature.
It doesn't make the same noise as a blowing space heater, as there's usually not a fan. I've heard creaks and such from them.
As noted, the radiative effect can last for a few hours depending on energy loss in the space.
Not trying to be rude, the media cycle buried that result.
The unions got the sick leave, after the media reported the strike ended without it.
It was accomplished a couple weeks later, if I recall correctly.
https://www.ibew.org/media-center/Articles/23Daily/2306/230620_IBEWandPaid