https://sealed.com/resources/winter-heat-pump/#:~:text=What%20temperature%20does%20a%20heat%20pump%20quit%20working%3F,as%20low%20as%20%2D22%20degrees.

https://www.consumerreports.org/heat-pumps/can-heat-pumps-actually-work-in-cold-climates-a4929629430/

In other words, your knowledge is suspect.

I'd recommend spending some time here instead of finding information to confirm your biases.

https://cleantechnica.com/2022/05/06/seeing-climate-solutions-clearly-through-biases-missing-data-is-challenging/