If you’ve got the Alexa integration installed then the latest update causes the reboot. You might be able to disable it as it’s coming up and then downgrade it to one that works

That’s the most confusing load of bollocks I’ve read in a long time.

Are there major limitations of using a computer monitor as a TV if I plug another device into it (eg Apple TV) apart from the screen size?

I feel this would be a good way to go for small cheap TVs at least.