I wouldn't discount it quite that much. Consider an ILS approach with a procedure turn and a missed approach using multiple crossing radials and such. I'd much rather load it up in the GPS, use that for all the "complicated" navigation (including using an autopilot in GPSS mode, if so equipped), then just switch my attention over to my ILS receiver for final, then back to the GPS for the missed.
I would consider the use of radials and intersections and such other than final to be the backup, to be used only if the GPS failed.
When I teach autopilot use, I teach exactly that - GPSS for everything until final, switch to APPR mode prior to the FAF (typically required to activate the GS capture circuitry) and then once we go missed, back to GPSS. That's the most precise way for the autopilot to fly it, and works well.
Eve if we're just getting vectors to final, having the approach loaded into the GPS still gives you the advantage of increased situational awareness, fix crossing, etc., and of course it is ready for the missed approach if you need it.