To be frank he is not really as wealthy or even rich as he is acting, this is among the reason they knew he is not Satoshi because he can't even accessed the Satoshi address with a million+ bitcoins. He is far from being consider among the wealthiest bitcoiners.
I firstly heard about this guy was in 2015 end or mid of 2016 something (didn't remember the actual date) but the price of btc was not much high during that time and probably i wouldn't say Craig is poor perhaps holds bunch of bitcoin in couple of multiple different wallets till this date. Also, afaik craig was among those people much intrested in forking bsv years ago and here is the link
said btc won't reach 100k ever, and what most i dont like about him is "a fragile ego" dude pretends to be satoshi and criticize bitcoin that bsv is the orginal vision of satoshi will fulfill the original promises being p2p cash system at a same time.
I didn't literally mean that Craig Wright is poor but in comparison with bitcoin whales he is, they do have millions of dollars thanks to HODLing bitcoin but he is not even among the list.