All the rich people here would frown upon this but I don't care and I'll give a real use case scenario which illustrates to why the XSS exists. I am going to use Remnant II because I don't have BG3 on my xss, but I am guessing they will both push the horrible little system to it's limit.
Playing Remnant II on my mid/low range 5800x3D/6800xt Windows machine at around 80FPS/ultra draws around ~450W. That is TOTAL system power draw including my 27 inch 1440p/165HZ panel.
Playing Remnant II on my XSS at 30FPS including a 60 inch 4k/60hz TV draws ~133W
In my area, electricity costs 0.35 cents per kWh, so playing Remnant II for 3hrs/day avarage would cost
$14/month on Windows
$4/month on XSS
at this point you just have to decide if the extra frames and pixels you get on Windows are worth the extra cost, for some games, like BG3 here, I'd say no.. I frame cap it to 60fps because its turn based and frames don't matter as much, but for example the extra cost for playing CoD at 1440p/165FPS is very much worth it to me, which btw is costing $25/month...
Now, let us consider the cost of the actual systems
Windows system with monitor and peripherals - $1600 (if you are lucky)
Used XSS including controller - $180
So, I just don't understand why people don't get why the xss exists. Not everyone can afford expensive gaming...