A while ago I used to transfer my funds to paper wallets and I felt safer splitting them into many, many different addresses. After a while, I decided to split them into unequally valued paper wallets so I had a bunch of 0.01BTC papers, a bunch of 0.05BTC papers etc.. his funds might have been sent to cold/paper wallets, or who knows. Might be another rich holder securing his funds. Upon looking up the addresses I couldn't find any other results except the transactions you've also linked here.
But if he wanted privacy, he would use a mixer, and he wouldn't definitely split them into exact 254 BTC amounts. Now everyone knows he owns all these coins, he just split them into a bunch of different addresses. He needs to do a couple more passes into different amounts. Perhaps he is going to mix all of these bech32 254 BTC addresses using a mixer, since it's impossible to mix 25,000 BTC at once, it's too much, so he may dividing into smaller batches. Wow that must be such an headache to sort all these addresses out. Rich people problems I guess
