" 500 BTC transferred from unknown wallet to Coinbase"
My interpretation of this, is that this whale is expecting the price to go up, so its moving a part of their BTC into an exchange to start trading leveraging that capital.
But, the comments I read on the style "game over" or "time to move to ETH" suggest the opposite.
How do you guys read the Whale Alert tweets?
Whales use wallets to hold, noncustodial wallets preferably, hardware and other offline wallets most preferably, while moving bitcoin from wallet to exchanges is indicating a bear market because the whales are moving bitcoin to exchanges to sell.
But, if whales are moving bitcoin from exchanges into wallet, it means they want to hold, and a sign bull market will soon begin.
Although the trading market works on news, it is not always true. Whales move money from wallets to exchanges sometimes just fool small investors, or they simply want to convert their investments.
So don't be too alarmed to see such deals.