Dashcams can indeed get pretty hot and still work, in regular driving circumstances.
But parked with the additional heat of the sun, and no ventilation or aircon going, and then the camera also on in parking mode generating its own heat, then things can reach critical.
The battery based cameras will be a problem with heat, though even here some are better than others, but yes in a place with extreme high or low temperatures capacitor cameras is the best option.
You can also put a new battery in the camera, but it do of course demand some DIY skills and tools to take it apart, and not all people can do that or are willing to do that.
My little Japanese car dont even have aircon, it is that cheap, even came without a radio too. but i have never had a camera shut down during regular operation, but of course Denmark only go to 30 deg C on the best of summer days, Singapore can beat that with its eyes closed, and probably at night too in the summer.
I still have quite a few 64GB memory cards, as those are cheaper to buy and i need a lot of the relevant memory cards to be able to test for memory card compatibility in the cameras i am sent to test.
But in general now i use 128 GB cards and 256GB cards in the permanent cameras in my car.
I do not have this particular camera, i have never tried one of the 70mai cameras.