For an appliance, if you embed a 1 year certificate that can't be renewed, the feature will stop working correctly after a year. That's already quite short. And if it can be renewed, then it can also most probably be renewed every month no problem.
You linked to a whole thread in which the top comment asks a question that's a slippery slope, and of which the top answer lists advantages of a reduced validity time (while pointing out that too short like 30 seconds poses reliability and scale risks, to address the slippery slope argument).
You linked to a whole thread in which the top comment asks a question that's a slippery slope, and of which the top answer lists advantages of a reduced validity time (while pointing out that too short like 30 seconds poses reliability and scale risks, to address the slippery slope argument).
What did you mean to point out?