Why are whales secretly accumulating Bitcoin?

Bitcoin transactions have risen significantly over the last two years, and with that increase, private transactions, especially CoinJoin transactions, have tripled. While some attribute the rise of CoinJoin transactions to hackers laundering funds, others point to increasing whale accumulation.  The bitcoin market has seen a major shift in the behavior of transactions. So-called CoinJoin... source: https://www.cryptopolitan.com/why-are-whales-secretly-accumulating-bitcoin/