There are reports that ETH co-founder has liquidated their ETH holdings, while institutions are continuously buying. Is ETH really promising or are there serious flaws that make it not worth holding?

#ETH "Silenced" wallet suddenly moves after more than a year, withdrawing 1855 ETH from the exchange
About 20 minutes ago, an address 0x7BE3…5C7ad0 that had not had any transaction records for a year suddenly withdrew 1855 ETH from Binance.
Total value approximately 4.84 million dollars
Average price per coin is 2609 dollars