The decentralization should be an advantage but the space is actually controlled by some people. It is difficult to deny the manipulation of price and the process of hoarding. Bitcoin cant be the king in the space for ever and the whales will become threat in the space in the future. A million bitcoin holder can easily manipulate the market that holds trillions of dollar that is in the world economy, it could be threatening to government and world leaders.
I agree with you, that it is difficult to avoid market manipulation for crypto users. But I understand how the whales control the market, and there are a few tricks to avoid the whales' manipulation of the market.
1. Do not often monitor the order book. The less that depends on measuring the depth of the order book, the better. Most exchanges allow traders to minimize the order book from the trading screen display.
2. ignore large individual trades and focus on longer price trends to avoid confusion to avoid wash trading.
3. avoid detection when whales prop up prices to liquidate their exposure by taking a long-term look at crypto price action.