I'm not saying either way (as this wasn't specified in the tweet either) - just pointing out the huge discrepancy between easily accessible statistics and the story the author of the tweet is trying to tell. There is a huge assumption being made (10 million people hold bitcoin) and zero justification for that assumption.
There might be 46M wallets related to US accounts with Bitcoin in them, but 1 person could own 45M of them (I seriously doubt it, but you get the point).
there are only 18.6 million bitcoins currently mined (upper bound of 21 million which will be asymptotically approached as the difficulty increases) and like 1.8 million of them are missing forever due to lost wallets.
Yep - it seems we're getting deep into "73.6% of statistics are made up on the spot" territory no matter which source we choose :) Which then raises the question - why did the author of the tweet choose 10 million?