The main issue is usually not that his speech is “wrong,” but that RFK Jr. has a known voice disorder called spasmodic dysphonia , which can make his speech sound strained, shaky, or hard to follow.

What people are noticing

  • His voice can sound raspy and interrupted because the muscles involved in speech don’t work smoothly.
  • In recent coverage, his remarks have also drawn attention for the content of his controversial health claims , especially around vaccines and public health.

Why it stands out

  • Some listeners assume he is nervous, ill, or stumbling over words, but the voice issue itself is a neurological disorder , not just a speaking style.
  • Separate from the voice, critics often focus on whether his statements are factually accurate , especially on medicine and vaccines.

Bottom line

If you mean his voice , the likely explanation is spasmodic dysphonia. If you mean his speech content , the controversy is mostly about his health claims and public remarks , not just how he sounds.

If you want, I can also give you a plain-English breakdown of the exact speech clip you saw.