I would agree with you (and understand your logic) if there were no users that still believe Bitcoin will achieve wide scale adoption.
We're talking about 100k+ holders here, not holding in general. Holding is not going anywhere. But I could bet my entire bankroll that we can count 100k+ holders with the fingers of 1 hand (although it's pointless because there is no way to know). We've never had anyone with more than a few hundred thousand coins, let alone now. If someone truly has over 100k he is in a club that not many are a part of.
Anything is possible though. I just think that putting much more than that into bitcoins is borderline insane. Not that it couldn't be ingenious, but bitcoins are a risky investment and when we start talking about hundreds of thousands in USD, let alone millions, I start to get very skeptical.