be manipulate, when these coin are well distributed and decentralized?
Some people still believe that news can be used to manipulate the market. Example is if the United States SEC X account that was compromised could have been actually done by someone intentionally. The aim of the person could be to manipulate the crypto market. But aside that, I do not know how bitcoin price can be manipulated because having a marketcap of over $1 trillion is not a joke. Manipulation is almost impossible unlike on low marketcap coins.
Market manipulation for bitcoin is quite low and limited, unlike ethereum and other pump and dump altcoins, they become highly affected whatever news that affect the market.