In terms of external displays i believe you wont have a problem with them considering on the x you could hook up a (standard usb 4) egpu and even on the non x with a dock you can get a 4k60 display (depending on the dock and maybe even freesync) I don’t think the cpu performance is the limit (it performs on par with a i9 4 generations behind but with 30W), nor the ram (windows paging is what makes win11 usable on that when gaming), although battery life on my z1e ally (non x) is awful but when plugged in that won’t matter. What I am concerned about is longevity of the hardware, its not like a standard laptop where the ram is socketed, the wifi card is socketrd (which I HATE, please do put that in mind this is a mediatek wifi card which isn’t replacable and has latencies that spike so bad for absolutely no reason and it makes remote desktop unbearable) although you can always plug in a usb to ethernet NIC on that hyptothetical dock youd be using it on

The amount of memory that is dedicated to the iGPU can be changed (at least on the normal ally non x) It’s a range from basically none (auto) to 8GB on my normal ally

apps like https://play.google.com/store/apps/details?id=com.parseus.codecinfo (https://apt.izzysoft.de/fdroid/index/apk/com.parseus.codecinfo) show whether or not you’ve got it, on my samsung galaxy note 20 ultra I’ve got software only :(

I’ve been using a phone without a headphone jack for 3 years now with galaxy buds, if i didn’t accidentally break the included usbc headset id be using that instead (even on pc) but i did so now i use the headphone jack on my wireless xbox controller on pc (connected to my pc via usb because my motherboard’s audio makes noises when the pc is basically doing anything and echoes my mic into my left ear on windows (not a toggle in software or anything but said problem goes away if i power cycle pc by psu and then boot into linux)) and on phone i get to deal with Bluetooth and if i did have a usbc headset again i wouldn’t be able to use it and charge the phone in a practical way (wireless charging is an option but my phone discharges faster than it changes wired (when connected to pc), wireless charging is even slower)