

I suspect Russia is worried about how well their nukes will work. The small tactical ones (battlefield nukes) are the most complex and so most at risk of a maintenance failure.
Russia’s worst fear is deploying a nuke, only to have it fizzle. At this point it’s strategic or nothing. Deploying a strategic nuke would cause massive political fallout. Far more than Russia could cope with. No-one, including China and India, want that genie back out of the bottle.
That’s exactly what I do. I also have IoT devices that are still trucking along a decade later. I fully expect them to likely do a decade more.
Both Tasmota and ESPhome provide open source firmware for many IoT devices. They throw up a local API interface that other systems can talk to. Providing legacy support is as hard as using HTML put and get commands.