I would say pop is for new users, arch is for users that know what they want and willing to put in the time, i wouldnt say its “for hackers”.
picking an arch based distros thats already built for you though is the easy way to go if you want a linux system for gaming. I tried using pop for a while. it was ok but ultimately a rolling release system was better.
Unfortunately some old tech does just start becoming obsolete at some point. sure you can force old software on to it but unless its designed to just interact on its own or with some other equipment thats stuck in time, it usually ends up not being worth the trouble or time, especially when you can get pretty powerful (comparison wise) equipment for cheap. chrome books for example are dirt ass cheap and some times a better solution than trying to get a super old system running again.