Yeah, the whale alerts are trash.

Back at the end of the last year, Coinbase decided to upgrade their cold storage system. This involved them moving around $5 billion in cryptocurrency. They made an announcement before they started (see here: https://blog.coinbase.com/notice-of-blockchain-movements-b09cb1ec46dd). They released constant updates on https://status.coinbase.com/. The addresses in question were known to be Coinbase addresses. Whale alert on twitter still lost their shit, and posted tweet after tweet after tweet after tweet about these anonymous "whales". A bunch of "news" sites ran equally nonsense articles about said "whales" moving all their coins and getting ready to "dump on the market". The result was a load of panic over completely false information.

All these whale alerts and news sites only care about one thing - views. They will post any old trash to get those precious clicks, subscribes, likes, shares, whatever. You'd do well to ignore them.