Not true
Provided the hypos are the same type and there are no other hidden traits, you would get all Hypos, het for Anery and and Caramel.
A crimson is a Hypo Miami. Miami morphs are selected for coloration and are not based on a genetically recessive trait such as Amel or Anery. That's not to say that the snake may not look like a crimson, but the chances of that are rather remote since your not starting with Miami stock to begin with.