Actually, no it's not. That's a pretty good prediction if you tell every person on this forum how to do it.
If, in order to induce a desync, one needs to alt+tab out, alter files, and restore them - or anything that requires more than pressing a button in-game I doubt the entire player base will begin using it as not everyone here cares enough about their stats, and most players would be too lazy to do this. I can understand your concerns, however I feel it's a tad unrealistic.
You've played 34 games this epoch. No exageration.
And, give or take, an additional 113 games over my WAN against 19 seperate opponents who - like me - jump from computer to computer to play all on various set ups and internet connections. That's since the last update was released - many, many more games before that. To not see a desync report since purchasing Demigod at all means either of two things: all online desyncs are intentional or it's a very common issue in the game itself and I have yet to play against someone who does it, or, it's a small to non existant issue in the game itself and no one I've played against intentionally does it if there are any at all.
Once you tell everyone how to do it, then it becomes the host disconnect exploit all over again, except worse because you can't control it. The more information the DEVS have the better.
I understand your point before I read your post, and unless a complete 100% full proof method of generating a desync was released complete with YouTube tutorial and step by step instructions, this won't become as wide spread as QoT's over powered build.
