There are many ways to skin that particular cat.
I see lots of folks using variations of this homemade dealy: https://community.home-assistant.io/t/fsr-the-best-bed-occupancy-sensor/365795
I however have a SleepNumber bed which heretically has a cloud integration in HASS that provides an impressively accurate presence sensor for both sides of my bed.
If I were to get a new bed I might build my own, or consider the Withings Sleep Mats - https://www.withings.com/us/en/sleep/shop which should just work with the HASS/Withings integration. The Sleep mats are too expensive in my opinion though I really like my Withings Smart Scale.
I don’t agree with the use of these weapons, ever, but let’s not deceive ourselves that they’ve not been being used throughout the conflict already.
And just so I understand your point, you’re suggesting that if the use of these weapons systems, which are already being used in this fight, incites Russia to use nuclear weapons, that will be the fault of the US, and not the fault of Russia who both started this war of aggression and escalated it to the use of nuclear weapons in your hypothetical. Do I have that right?