You're definitely correct in the fact that Polestar isn't the highest in software quality, but it was the examples of what they did right that I wanted to focus on.
They're garbage when it comes to their mobile app and some of the controls on the infotainment system.
> sometimes the HUD doesn't work(it's 50/50 if it will turn on).
You should definitely reach out to Hertz and ask for a car swap. Sounds like there's a bad connection between the display and the IHU. Both screens are operated by the same system, so it's unlikely to be a software failure.