out of support sooner
PCs don’t work that way, especially since the APU is the same, a new OS can be installed decades later easily, and mostly be limited by software requirements like the amount of system RAM (unless it is something like windows 11 which requires some special chip in the hardware, but linux generally does not work like that)
think of the steam deck like you would a laptop
you could try software like libreoffice first off, that will tell you how well you would fair using the steam deck as your daily. pycharm can be found in the discover software center