Disconnect is not equal to desync - it's worth looking into, but please don't call someone out and equate 23 disconnects with a guy desyncing all the time. You counted 1 desync from personal experience.
That said, reviewing his record and just viewing the loses he has on page 1, every one of them has him disconnecting. So, we know this guy doesn't typically play out games or rage quits. Digging a little deeper, you can also see he does quite a few vs computer only games. He got the game in June and started playing quite a bit in August. Could he intentionally be desyncing? Sure. Is it a little suspicious? Sure. Do I think he's intentionally desyncing? Nope.
Does anyone here honestly believe that desyncing is ONLY caused by some sort of exploit? People with high disconnect rates (from what I've seen) have greater odds of desyncing a game than a player without a lot of disconnects. Pretty much every desync I've encountered happens when a player or 2 leave the game early. And think about it: the 2 guys most notorious for exploiting host disconnect and now desyncs (belier13 and apika) have extremely low disconnects (<.5%). So, we have 2 guys who we can absolutely confirm with screenshots, etc, that use an EXPLOIT. And then we have other people with high disconnect rates and frequently desync. IMO, what needs to happen is for a patch to go in that will hopefully resolve people who cause desyncs when leaving a game AND for people who are exploiting the system to be banned.
A thread like this, while a little unpleasant, is useful (though similar to the hall of shame) because we can track repeat offenders as possible and so SD can look into those exploiting. I don't much care for people who dc all the time and often ruin the experience for others, but I wouldn't think its all that fair to ban them because the game desynced when they left.