First of all, an automatic afk kicker is not a new thing or a hard thing. It is easy to block all in-game methods.

If the player bots or constructs some physical thing in real life to periodically press keys on a keyboard, not much you can do about that other than pattern detection, but as far as some of the more basic stuff, like won't kick during crafting or npc interaction or cutscene or any of the other hundred of no-hack-needed methods currently available, those ARE easy to fix...if kicking afk people was ever meant to be a priority in the first place, which it wasn't.

Somehow you stopped reading at #1 and didn't read #2, or fully grasp why #2 was relevant.

If you turn off the afk timer, you'd probably see 10, 11, 12 hour long queues. Or longer. And if you make it so you don't have to log in to world transfer, people would have the choice...transfer off Balmung, or never play that character. Given that hard choice, I'm pretty sure people would transfer off.