You could have left me alone! [He grabs Clayton by the collar. There's no indication that the memory of the stabbing wouldn't mortally wound him, but what difference is there between reliving the moment in his mind and reliving it as a ghost?] Instead you barged into my mind doing who-knows-what! What if it were the other Cybertronians? Do you know what sort of distress you could cause them!

[Megatron specifically has mnemosurgery-related trauma to the point he fears needles. What if he lashed out at Clayton violently? What if Drift or Rodimus has to deal with this?]

Don't humans have a taboo against the manipulation of the mind?!