Why did he lie about the deaths of 83 Samoan children in front of the Senate?

https://apnews.com/article/rfk-jr-samoa-measles-kennedy-vacc...

the man literally has a full wikipedia section header: "Anti-vaccine advocacy and conspiracy theories on public health" [0]

[0] https://en.wikipedia.org/wiki/Robert_F._Kennedy_Jr.#Anti-vac...