* Excellent power usage. Pi uses ~0.7 W and the screen is listed at 3.6W, though I believe it's actually ~7W.
* Each part upgradable and replaceable in a whim. Can change your motherboard or RAM, or add an extra GPU or an entirely different machine, as all of them are up in the clouds!
* Extremely lightweight, 0.75 kg.
* Incredibly thin, 9 mm. Its stand is also its cover, requires no extra bag, except for the HDMI and USB cables. Powerbank? I carry it everywhere anyway. Keyboard? It has only a slightly larger surface area than an iPhone 15 when folded, can carry in my pocket, a cheap Chinese bluetooth one I had lying around (couldn't be bothered to troubleshoot the USB on the Pi.).
* Unmatched connectivity, I have unthrottled datacenter internet, and I can use my phone's LTE connection to connect to the server without skyrocketing my cellular bill, as the only thing transmitted is the screen. School dormitory Wi-Fi is not the best, it introduces extra latency.
OTOH, It lags while scrolling a web page. Bottleneck must be the CPU, because there is no lag when connecting via my iPhone 7. I used NoMachine with the same setup in the past and it had no such lag, could even play YouTube videos from what I remember. I also didn't overclock the Pi to the max and am not using a heatsink nor a fan, and didn't do any sort of performance tuning for the RDP at all. Because I can't be bothered, it works bearably for my school work, and gonna get my new iPhone next week anyway.
Now don't ask me how I managed to re-pair the keyboard with the Pi when it got unpaired and the Pi's local IP got reassigned randomly, from Alpine Linux running in iSH on my current iPhone 7...