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. After all that was the block reward in the early days of bitcoin, could this possibly have something to do with Satoshi Nakamoto as the creator of bitcoin?
[...] What's also interesting is they ignored the inputs of 2 other deposits from 2020.
It really looked strange seeing him/her not take out the entire balance.