Bitcoin is popular among huge population all over the world while the demand for altcoins is limited. Does this mean there is least effect of whale manipulation on bitcoin among all crypto coins ?
Totally correct !!
The amount of money needed to manipulate Bitcoin when we consider the marketcap of BTC is in the trillions, and who in the right mind would want to risk this much just to paint markets in their liking of which there is risk of losing or being liquidated should things go against you... honestly it's not just worth it!
But on the contrary, the most manipulated coins/tokens are usually the Altcoins because marketcap for these is usually small and with a couple of dollars a whale can easily pump or dump the coin with a simple buy/sell.