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 ?
I would say the opposite than your saying. Bitcoin has biggest marketcap and dominate the cryptocurrency market but I believe there are more people who don't use Bitcoin but use altcoins or invest in altcoins. They don't actually make good decisions because altcoins are more risky for either trading or investment. Holding altcoins in a bear market in one market cycle, which lasts about 2 years is very terrible.
Bitcoin can have 70% or 80% correction from its all time high but altcoins have deeper corrections, 90% or 99%. Many of altcoin projects die in bear market because altcoin developers are more easily to abandon their projects, and wait for new trends to create new projects.