Words have meaning. He said he does not hate him. That does not mean he likes him. Hate is a very strong emotion. Dislike is a much less stronger emotion. That is not all the same.
(I also don't hate Elon, but I still don't like him or consider doing buisness with him in any way)
USAID was a highly effective and efficient operation. Musk dismembered it, leading to untold misery, death, and the spread of infectious diseases. I think this is reason enough to hate Musk.
Also, keep in mind that what Musk did was a violation of the separation of powers in the Constitution, so he simultaneously killed a program which saved lives while he also started the U.S. on the road to authoritarianism.
https://www.bu.edu/sph/news/articles/2025/tracking-anticipat...
https://www.npr.org/sections/goats-and-soda/2025/07/01/nx-s1...