50 bitcoin block reward & he/she didn't make any withdrawals from that balance, i can't imagine how patiently he/she was waiting for the right moment for him/her, he/she has gone through so many ups/downs in the price of bitcoin.
You're probably thinking of someone with a normal salary and normal net worth who didn't have any more bitcoin and has been waiting for this moment to move their treasure. But probably for that person it has been like waiting to sell an initial $100 investment that has turned into $5,000.
I would think the guy has quite a bit of money. If he mined bitcoins that early it's highly unlikely he only had those. The normal thing is that he would have mined or bought more later and used those to sell or spend later. He probably kept the early ones partly as a sentimental matter and partly because he knew it would raise speculation and might somehow affect the market.
Moving money at a very low cost and with zero bureaucracy, without borders, without having to have your name registered in any system, without opening hours, without questions, without anyone getting involved and without having to answer to anyone. Ah... how good it is to have bitcoin, there is nothing like it in this world. Freedom, freedom!
Unless he lives in El Salvador and intends to spend them directly, which would be unlikely because he would not have moved them all but would have been spending, he is going to run into a lot of bureaucracy converting to fiat.