It's a "soft" disable. The lever stays in the down position (enabled) but the AFK is turned off. It's fine if you're just going to taxi to parking and call it a day, but if you don't reset it before you take off again, you'll probably forget about it, and then when you come in for your next landing, you're wondering why the AFK button doesn't work, and you end up fiddling with the lever on final.
@@Viking355th You know, I think that happened to me yesterday. I flew four sorties in the same jet. It seemed like the AFK was flying very slow for my given approach altitude. Probably wasn't even enabled!