The Raspberry Pi 500, essentially the Pi 5 inside a keyboard, is sold as a "refined personal computer". "A fast, powerful computer built into a high-quality keyboard, for the ultimate compact PC experience."
Then marketing struck again. Anyway, that isn't a device the average user would buy, so I'm not concerned about Ubuntu failing to upgrade on such a platform. I would take the complaint as valid if the issue existed on a consumer laptop, but this isn't the case.
https://www.raspberrypi.com/products/raspberry-pi-500/