the argument is - and I agree - "special" needs implies the needs are optional, surplus, extraneous, unusual and/or deliberate and actually makes less sense than "complex" needs.
If you "need" it - it's not special. Some fish don't need sunlight, does that mean that plants that need light have "special" needs? "This plant is so special it needs sunlight for photosynthesis" would be a weird statement. "This child is special because it needs to eat several times a day" "This child is special because it needs to wear warm clothes to prevent it freezing to death in low temperatures" "This child is special because it wasn't born knowing how to read, it had to be taught" etc- all make no sense. "This child needs to eat, wear clothes, yet learn how to read" are all so obvious to be taken as read.
are you absolutely sure the objection is because "complex needs" is truly impossible to understand, or actually because changing a learned behavior is sometimes uncomfortable and requires effort?