The article doesn’t go into it, but a key advantage they have is that heat pumps move heat, rather then trying to generate it. So they can move a lot more heat into your house than would be generated by running the electricity they use through a resistor. This makes them effectively more than 100% efficient (the exact amount depends on temperature) as compared with burning a fuel or resistive heat.
Nah you’re arse about. It’d be like saying all internal combustion engines are generators.
Engines just drive things, like cars, generators, lawn mowers etc. They’re a technology for rotating something.
Heat pumps are just a technology for moving heat.
Not going to reply any further as unsure at this stage if you’re trolling. Literally just go read the Wikipedia page on heat pumps.