Many autistic people feel that Autism Speaks is a hate group. Even among those who don't feel quite as strongly, it's still often considered a problematic group. Possibly akin to groups that used to want to "cure" homosexuality.
Among other things, Autism Speaks was a big advocate of the discredited theory that vaccines cause autism [1].
[0] See the funding statement in https://www.mdpi.com/2072-6643/15/17/3772.