I’ve had Linux servers with > 1 year of uptime. I’ve seen much, much higher. It’s entirely possible to have a stable foundation; it’s modern software that’s hot garbage, and relies on ephemerality to stay running.
...right, yes, servers. I've certainly never accidentally forgotten to reboot a laptop on cheap commodity hardware for a few months. Slightly more than a few months. Look, it got rebooted eventually, okay?