As a former user of an ARM-based Chromebook, I very much appreciate an elegant, power-sipping laptop design with long battery life and completely passive coolin

As a former user of an ARM-based Chromebook, I very much appreciate an elegant, power-sipping laptop design with long battery life and completely passive cooling. The Pinebook also looks to be surprisingly serviceable, although I wish it had swappable RAM, WLAN/Bluetooth daughterboards and so on. My main worry that keeps me from considering this as my laptop is longevity. I am sure the build quality is fine, but for how long will the performance be adequate for desktop use? For watching videos? For watching videos in a web browser? My two current main machines are a Phenom II X6-based desktop and a Thinkpad X220i, both machines are around 10 years old, and while the Phenom II would have been considered high-end at the time, the X220i has an i3 that would have been "fine, but not amazing" when it was new. The desktop is still perfectly capable, I watch 4K videos, play games (not the newest-new AAA titles, but it is fine for most other games) and do everything else I need to do, it does not feel slow nor as if it is lagging behind. The laptop is no speed demon, but it handles 10-20 Firefox tabs well enough, and plays hardware-accelerated 1080p h264 video with no dropped frames. While I do accept that the Pinebook Pro is positioned as a low-priced machine, will it still be able to provide adequate performance for general tasks, 5 years from now?