Bitfinex trying to cover up BTC price manipulation by miners. Unlike they claim, there is nothing unintentional and coincidental. They sold, because they wanted to push down the price and because they are directly or indirectly controlled by a single entity. Why that is - who knows. But one thing clear is that they are not all independent and did not independently decide to sell large quantities all at once while the price is still lower. And they did not all independently but at once and necessarily hours after ETF approval decide to invest into upgrades.

Bitfinex's email: "In this week's on-chain report, we identify that much of the recent price falls in Bitcoin, particularly following the approval of spot Bitcoin ETFs by the SEC, can be attributed to selling by Bitcoin miners, who used the run-up in BTC as a catalyst to exit, or leverage, their positions.

Miners in particular are minded to sell given this year’s upcoming halving, which will see BTC rewards reduce and, hence, miner profitability. Selling now provides the capital for miners to upgrade infrastructure and is a reminder of the significant influence on market liquidity and price discovery that miners have. Miner reserves of BTC dropped significantly shortly after the ETF approvals, and last week again saw the largest outflows from miner wallets ever recorded - suggesting that more selling could be imminent."